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Agostini M, Alexander A, Araujo GR, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D’Andrea V, Demidova EV, Marco ND, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hofmann W, Huang J, Hult M, Inzhechik LV, Csáthy JJ, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kilgus K, Kirpichnikov IV, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Korošec M, Krause P, Kuzminov VV, Laubenstein M, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Marshall G, Misiaszek M, Morella M, Müller Y, Nemchenok I, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Redchuk M, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, Sturm KV, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. An improved limit on the neutrinoless double-electron capture of 36Ar with GERDA. Eur Phys J C Part Fields 2024; 84:34. [PMID: 38229675 PMCID: PMC10788323 DOI: 10.1140/epjc/s10052-023-12280-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/21/2023] [Indexed: 01/18/2024]
Abstract
The GERmanium Detector Array (Gerda) experiment operated enriched high-purity germanium detectors in a liquid argon cryostat, which contains 0.33% of 36 Ar, a candidate isotope for the two-neutrino double-electron capture (2ν ECEC) and therefore for the neutrinoless double-electron capture (0ν ECEC). If detected, this process would give evidence of lepton number violation and the Majorana nature of neutrinos. In the radiative 0ν ECEC of 36 Ar, a monochromatic photon is emitted with an energy of 429.88 keV, which may be detected by the Gerda germanium detectors. We searched for the 36 Ar 0ν ECEC with Gerda data, with a total live time of 4.34 year (3.08 year accumulated during Gerda Phase II and 1.26 year during Gerda Phase I). No signal was found and a 90% CL lower limit on the half-life of this process was established T 1 / 2 > 1.5 · 10 22 year. Supplementary Information The online version contains supplementary material available at 10.1140/epjc/s10052-023-12280-6.
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Agostini M, Alexander A, Araujo GR, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brugnera R, Caldwell A, Calgaro S, Cattadori C, Chernogorov A, Chiu PJ, Comellato T, D'Andrea V, Demidova EV, Di Giacinto A, Di Marco N, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hackenmüller S, Hemmer S, Hofmann W, Huang J, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kilgus K, Kirpichnikov IV, Klimenko A, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lehnert B, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Marshall G, Miloradovic M, Mingazheva R, Misiaszek M, Morella M, Müller Y, Nemchenok I, Neuberger M, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Redchuk M, Riboldi S, Rumyantseva N, Sada C, Sailer S, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Sullivan S, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Final Results of GERDA on the Two-Neutrino Double-β Decay Half-Life of ^{76}Ge. Phys Rev Lett 2023; 131:142501. [PMID: 37862664 DOI: 10.1103/physrevlett.131.142501] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 08/15/2023] [Indexed: 10/22/2023]
Abstract
We present the measurement of the two-neutrino double-β decay rate of ^{76}Ge performed with the GERDA Phase II experiment. With a subset of the entire GERDA exposure, 11.8 kg yr, the half-life of the process has been determined: T_{1/2}^{2ν}=(2.022±0.018_{stat}±0.038_{syst})×10^{21} yr. This is the most precise determination of the ^{76}Ge two-neutrino double-β decay half-life and one of the most precise measurements of a double-β decay process. The relevant nuclear matrix element can be extracted: M_{eff}^{2ν}=(0.101±0.001).
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Affiliation(s)
- M Agostini
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - A Alexander
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - G R Araujo
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - A M Bakalyarov
- National Research Centre "Kurchatov Institute," Moscow, Russia
| | - M Balata
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - I Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L Baudis
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - C Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - S Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia
| | - A Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - E Bossio
- Physik Department, Technische Universität München, Germany
| | - V Bothe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - R Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | - S Calgaro
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | | | - A Chernogorov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia
- National Research Centre "Kurchatov Institute," Moscow, Russia
| | - P-J Chiu
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - T Comellato
- Physik Department, Technische Universität München, Germany
| | - V D'Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, L'Aquila, Italy
| | - E V Demidova
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia
| | - A Di Giacinto
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - N Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - E Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - F Fischer
- Max-Planck-Institut für Physik, Munich, Germany
| | - M Fomina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre "Kurchatov Institute," Moscow, Russia
- Physik Department, Technische Universität München, Germany
| | | | | | - W Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - J Huang
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L V Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | | | - J Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M Junker
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - V Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - H Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - T Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K Kilgus
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - I V Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia
| | - A Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K T Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - O Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V N Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - P Krause
- Physik Department, Technische Universität München, Germany
| | - V V Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M Laubenstein
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - B Lehnert
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - M Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C Macolino
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, L'Aquila, Italy
| | | | - W Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - G Marshall
- Department of Physics and Astronomy, University College London, London, United Kingdom
| | - M Miloradovic
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - R Mingazheva
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M Misiaszek
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - M Morella
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - Y Müller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - I Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M Neuberger
- Physik Department, Technische Universität München, Germany
| | - L Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K Pelczar
- European Commission, JRC-Geel, Geel, Belgium
| | - L Pertoldi
- Physik Department, Technische Universität München, Germany
- INFN Padova, Padua, Italy
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - A Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - C Ransom
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - L Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - S Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - N Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre "Kurchatov Institute," Moscow, Russia
| | - C Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - S Sailer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, L'Aquila, Italy
| | - S Schönert
- Physik Department, Technische Universität München, Germany
| | - J Schreiner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M Schütt
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A-K Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - O Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | - M Schwarz
- Physik Department, Technische Universität München, Germany
| | | | - O Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M Shirchenko
- Joint Institute for Nuclear Research, Dubna, Russia
| | - L Shtembari
- Max-Planck-Institut für Physik, Munich, Germany
| | - H Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D Stukov
- National Research Centre "Kurchatov Institute," Moscow, Russia
| | - S Sullivan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A A Vasenko
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," Moscow, Russia
| | - A Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - C Vignoli
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - K von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - T Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C Wiesinger
- Physik Department, Technische Universität München, Germany
| | - M Wojcik
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - E Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - B Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - I Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S V Zhukov
- National Research Centre "Kurchatov Institute," Moscow, Russia
| | - D Zinatulina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G Zuzel
- Institute of Physics, Jagiellonian University, Cracow, Poland
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3
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Agostini M, Alexander A, Araujo G, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brugnera R, Caldwell A, Calgaro S, Cattadori C, Chernogorov A, Chiu PJ, Comellato T, D’Andrea V, Demidova EV, Di Giacinto A, Di Marco N, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hofmann W, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kilgus K, Kirpichnikov IV, Klimenko A, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Marshall G, Misiaszek M, Morella M, Müller Y, Nemchenok I, Neuberger M, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Rauscher L, Redchuk M, Riboldi S, Rumyantseva N, Sada C, Sailer S, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Sullivan S, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Search for tri-nucleon decays of 76Ge in GERDA. Eur Phys J C Part Fields 2023; 83:778. [PMID: 37674593 PMCID: PMC10477131 DOI: 10.1140/epjc/s10052-023-11862-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2023] [Accepted: 07/25/2023] [Indexed: 09/08/2023]
Abstract
We search for tri-nucleon decays of 76 Ge in the dataset from the GERmanium Detector Array (GERDA) experiment. Decays that populate excited levels of the daughter nucleus above the threshold for particle emission lead to disintegration and are not considered. The ppp-, ppn-, and pnn-decays lead to 73 Cu, 73 Zn, and 73 Ga nuclei, respectively. These nuclei are unstable and eventually proceed by the beta decay of 73 Ga to 73 Ge (stable). We search for the 73 Ga decay exploiting the fact that it dominantly populates the 66.7 keV 73 m Ga state with half-life of 0.5 s. The nnn-decays of 76 Ge that proceed via 73 m Ge are also included in our analysis. We find no signal candidate and place a limit on the sum of the decay widths of the inclusive tri-nucleon decays that corresponds to a lower lifetime limit of 1.2× 1026 yr (90% credible interval). This result improves previous limits for tri-nucleon decays by one to three orders of magnitude.
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Affiliation(s)
- M. Agostini
- Department of Physics and Astronomy, University College London, London, UK
| | - A. Alexander
- Department of Physics and Astronomy, University College London, London, UK
| | - G. Araujo
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | | | - M. Balata
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - I. Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L. Baudis
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - C. Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - S. Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- NRNU MEPhI, Moscow, Russia
| | - A. Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L. Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V. Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - E. Bossio
- Physik Department, Technische Universität München, Munich, Germany
| | - V. Bothe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - R. Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A. Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | - S. Calgaro
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | | | - A. Chernogorov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - P.-J. Chiu
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - T. Comellato
- Physik Department, Technische Universität München, Munich, Germany
| | - V. D’Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - E. V. Demidova
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Di Giacinto
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - N. Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - E. Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - F. Fischer
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Fomina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A. Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A. Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C. Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P. Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V. Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Hakenmüller
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Present Address: Duke University, Durham, NC USA
| | | | - W. Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L. V. Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Moscow Institute of Physics and Technology, Moscow, Russia
| | - J. Janicskó Csáthy
- Physik Department, Technische Universität München, Munich, Germany
- Present Address: Leibniz-Institut für Kristallzüchtung, Berlin, Germany
| | - J. Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Junker
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - V. Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - H. Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - T. Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K. Kilgus
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - I. V. Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Dubna State University, Dubna, Russia
| | - K. T. Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - O. Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. N. Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- NRNU MEPhI, Moscow, Russia
| | - P. Krause
- Physik Department, Technische Universität München, Munich, Germany
| | - V. V. Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M. Laubenstein
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - M. Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B. Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G. Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C. Macolino
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | | | - W. Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - G. Marshall
- Department of Physics and Astronomy, University College London, London, UK
| | - M. Misiaszek
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - M. Morella
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - Y. Müller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - I. Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
- Dubna State University, Dubna, Russia
| | - M. Neuberger
- Physik Department, Technische Universität München, Munich, Germany
| | - L. Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K. Pelczar
- European Commission, JRC-Geel, Geel, Belgium
| | - L. Pertoldi
- Physik Department, Technische Universität München, Munich, Germany
- INFN Padova, Padua, Italy
| | - P. Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - A. Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - L. Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - S. Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - N. Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - C. Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - S. Sailer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - F. Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - S. Schönert
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Schreiner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Schütt
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A.-K. Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - O. Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Schwarz
- Physik Department, Technische Universität München, Munich, Germany
| | | | - O. Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E. Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - H. Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D. Stukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - S. Sullivan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. A. Vasenko
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - C. Vignoli
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - K. von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - T. Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | | | - M. Wojcik
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - E. Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - B. Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - I. Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S. V. Zhukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | | | - A. Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - K. Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G. Zuzel
- Institute of Physics, Jagiellonian University, Cracow, Poland
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4
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Bonn SE, Hult M, Spetz K, Eke H, Andersson E, Wirén M, Löf M, Trolle Lagerros Y. Effect of a Smartphone Application on Physical Activity and Weight Loss After Bariatric Surgery-Results from a Randomized Controlled Trial. Obes Surg 2023; 33:2841-2850. [PMID: 37500930 PMCID: PMC10435407 DOI: 10.1007/s11695-023-06753-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 07/14/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
PURPOSE Ways to motivate and support patients in being physically active after bariatric surgery are needed. This trial was aimed at evaluating the effect of using a smartphone application targeting physical activity during 12 weeks on moderate-to-vigorous physical activity (MVPA, primary outcome) and secondary outcomes of inactivity, light physical activity (LPA), body mass index (BMI), and percent total weight loss (%TWL) after bariatric surgery. MATERIALS AND METHODS Data from a randomized controlled trial comprising 146 patients (79.5% women) undergoing bariatric surgery was analyzed. Mean age and BMI pre-surgery were 40.9 years and 40.5 kg/m2, respectively. Participants were randomized 1:1 to an intervention or a control group. Physical activity and body weight were objectively measured at baseline pre-surgery and post-surgery follow-ups after 6 weeks (weight only), 18 weeks, 6 months, and 1 year. Linear mixed models were fitted to assess longitudinal differences in outcomes between the groups. RESULTS A significant effect of the intervention (group-by-time interaction 16.2, 95% CI 3.5 to 28.9) was seen for MVPA at 18 weeks; the intervention group had increased their MVPA since baseline, while the control group had decreased their MVPA. The control group had lowered their BMI approximately 1 kg/m2 more than the intervention group at follow-up after 18 weeks and 12 months, yet, mean BMI did not differ between the groups. No intervention effect was seen on inactivity, LPA, or %TWL. CONCLUSION Our results indicate that use of a smartphone application targeting physical activity may have the potential to promote short-term MVPA post bariatric surgery. TRIAL REGISTRATION Clinicaltrials.gov : NCT03480464.
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Affiliation(s)
- Stephanie E Bonn
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Maria Aspmans Gata 30A, SE-171 64, Stockholm, Sweden.
| | - Mari Hult
- Unit of Gastroenterology, Department of Medicine (Huddinge), Karolinska Institutet, Stockholm, Sweden
- Department for Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Kristina Spetz
- Department of Surgery, Linköping University, Norrköping, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, Norrköping, Sweden
| | - Helén Eke
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Maria Aspmans Gata 30A, SE-171 64, Stockholm, Sweden
| | - Ellen Andersson
- Department of Surgery, Linköping University, Norrköping, Sweden
- Department of Biomedical and Clinical Sciences, Linköping University, Norrköping, Sweden
| | - Mikael Wirén
- Department of Surgery, Ersta Hospital, Stockholm, Sweden
| | - Marie Löf
- Department of Health, Medicine and Caring Sciences, Division of Society and Health, Linköping University, Linköping, Sweden
- Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Ylva Trolle Lagerros
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Maria Aspmans Gata 30A, SE-171 64, Stockholm, Sweden
- Center for Obesity, Academic Specialist Center, Stockholm, Sweden
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5
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Agostini M, Alexander A, Araujo GR, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brugnera R, Caldwell A, Calgaro S, Cattadori C, Chernogorov A, Chiu PJ, Comellato T, D’Andrea V, Demidova EV, Di Giacinto A, Di Marco N, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hofmann W, Hult M, Inzhechik LV, Csáthy JJ, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kilgus K, Kirpichnikov IV, Klimenko A, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lehnert B, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Marshall G, Miloradovic M, Mingazheva R, Misiaszek M, Morella M, Müller Y, Nemchenok I, Neuberger M, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Rauscher L, Redchuk M, Riboldi S, Rumyantseva N, Sada C, Sailer S, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Sullivan S, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wegmann A, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Liquid argon light collection and veto modeling in GERDA Phase II. Eur Phys J C Part Fields 2023; 83:319. [PMID: 37122826 PMCID: PMC10126063 DOI: 10.1140/epjc/s10052-023-11354-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 02/24/2023] [Indexed: 05/03/2023]
Abstract
The ability to detect liquid argon scintillation light from within a densely packed high-purity germanium detector array allowed the Gerda experiment to reach an exceptionally low background rate in the search for neutrinoless double beta decay of76 Ge. Proper modeling of the light propagation throughout the experimental setup, from any origin in the liquid argon volume to its eventual detection by the novel light read-out system, provides insight into the rejection capability and is a necessary ingredient to obtain robust background predictions. In this paper, we present a model of the Gerda liquid argon veto, as obtained by Monte Carlo simulations and constrained by calibration data, and highlight its application for background decomposition.
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Affiliation(s)
- M. Agostini
- Department of Physics and Astronomy, University College London, London, UK
| | - A. Alexander
- Department of Physics and Astronomy, University College London, London, UK
| | - G. R. Araujo
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | | | - M. Balata
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - I. Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L. Baudis
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - C. Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - S. Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- Moscow Inst. of Physics and Technology, Dolgoprudny, Russia
| | - A. Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L. Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V. Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - E. Bossio
- Physik Department, Technische Universität München, Munich, Germany
| | - V. Bothe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - R. Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A. Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | - S. Calgaro
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | | | - A. Chernogorov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - P. -J. Chiu
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - T. Comellato
- Physik Department, Technische Universität München, Munich, Germany
| | - V. D’Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - E. V. Demidova
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Di Giacinto
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - N. Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - E. Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - F. Fischer
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Fomina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A. Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A. Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C. Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P. Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V. Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Hakenmüller
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Present Address: Duke University, Durham, NC USA
| | | | - W. Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L. V. Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Dubna State University, Dubna, Russia
| | - J. Janicskó Csáthy
- Physik Department, Technische Universität München, Munich, Germany
- Present Address: Leibniz-Institut für Kristallzüchtung, Berlin, Germany
| | - J. Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Junker
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - V. Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Present Address: Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - H. Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - T. Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K. Kilgus
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - I. V. Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Dubna State University, Dubna, Russia
| | - K. T. Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- NRNU MEPhI, Moscow, Russia
| | - O. Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. N. Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - P. Krause
- Physik Department, Technische Universität München, Munich, Germany
| | - V. V. Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M. Laubenstein
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - B. Lehnert
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
- Present Address: Nuclear Science Division, Berkeley, USA
| | - M. Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B. Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G. Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C. Macolino
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | | | - W. Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - G. Marshall
- Department of Physics and Astronomy, University College London, London, UK
| | - M. Miloradovic
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - R. Mingazheva
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Misiaszek
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - M. Morella
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - Y. Müller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - I. Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
- Present Address: Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - M. Neuberger
- Physik Department, Technische Universität München, Munich, Germany
| | - L. Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K. Pelczar
- European Commission, JRC-Geel, Geel, Belgium
| | - L. Pertoldi
- Physik Department, Technische Universität München, Munich, Germany
- INFN Padova, Padua, Italy
| | - P. Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - A. Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - L. Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - S. Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - N. Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - C. Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - S. Sailer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - F. Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - S. Schönert
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Schreiner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Schütt
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. -K. Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - O. Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Schwarz
- Physik Department, Technische Universität München, Munich, Germany
| | | | - O. Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E. Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - H. Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D. Stukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - S. Sullivan
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. A. Vasenko
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - C. Vignoli
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
| | - K. von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A. Wegmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - T. Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C. Wiesinger
- Physik Department, Technische Universität München, Munich, Germany
| | - M. Wojcik
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - E. Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - B. Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - I. Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S. V. Zhukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | | | - A. Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - K. Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G. Zuzel
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - Gerda collaboration
- INFN Laboratori Nazionali del Gran Sasso, Assergi, Italy
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
- INFN Laboratori Nazionali del Sud, Catania, Italy
- Institute of Physics, Jagiellonian University, Cracow, Poland
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
- Joint Institute for Nuclear Research, Dubna, Russia
- European Commission, JRC-Geel, Geel, Belgium
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Department of Physics and Astronomy, University College London, London, UK
- INFN Milano Bicocca, Milan, Italy
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Max-Planck-Institut für Physik, Munich, Germany
- Physik Department, Technische Universität München, Munich, Germany
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
- Physik-Institut, Universität Zürich, Zurich, Switzerland
- Present Address: Duke University, Durham, NC USA
- Present Address: Leibniz-Institut für Kristallzüchtung, Berlin, Germany
- Present Address: Nuclear Science Division, Berkeley, USA
- Present Address: Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
- NRNU MEPhI, Moscow, Russia
- Moscow Inst. of Physics and Technology, Dolgoprudny, Russia
- Dubna State University, Dubna, Russia
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6
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Spetz K, Hult M, Olbers T, Bonn S, Svedjeholm S, Lagerros YT, Andersson E. A smartphone application to improve adherence to vitamin and mineral supplementation after bariatric surgery. Obesity (Silver Spring) 2022; 30:1973-1982. [PMID: 36050801 PMCID: PMC9805084 DOI: 10.1002/oby.23536] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/27/2022] [Accepted: 06/28/2022] [Indexed: 01/09/2023]
Abstract
OBJECTIVE This trial evaluated a smartphone application's effectiveness in improving adherence to vitamin and mineral supplementation postoperatively. METHODS This study was a randomized controlled trial comprising 140 patients undergoing bariatric surgery (gastric bypass or sleeve gastrectomy). Participants were randomized 1:1 to the 12-week intervention, using the smartphone application PromMera, or to standard care. The primary end point was adherence to vitamin and mineral supplementation. RESULTS Initiation rate and overall adherence to supplementation were high in both groups. Change in objectively measured adherence rate from before the intervention to 1 year post surgery, measured with pharmacy refill data, did not differ between groups for vitamin B12 (-9.6% [SD = 27%] vs. -9.3% [SD = 30%]; p = 0.48) or calcium/vitamin D (-12.3% [SD = 29%] vs. -11.5% [SD = 32%]; p = 0.44). A modest effect on the secondary end point (subjectively measured adherence, using the Medication Adherence Report Scale-5) was seen immediately after the intervention (intervention group 0.00 [SD = 1.3] vs. control group -1.2 [SD = 3.5]; p = 0.021), but this effect did not persist 1 year post surgery. No differences were detected in the prevalence of biochemical deficiencies. CONCLUSIONS The use of the smartphone application PromMera did not obtain a lasting improvement in adherence to vitamin and mineral supplementation 1 year post bariatric surgery.
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Affiliation(s)
- Kristina Spetz
- Department of Surgery and Department of Biomedical and Clinical SciencesLinköping UniversityNorrköpingSweden
| | - Mari Hult
- Division of Upper Abdominal Diseases, Karolinska University Hospital, and Unit of Gastroenterology, Department of Medicine (Huddinge)Karolinska InstitutetStockholmSweden
| | - Torsten Olbers
- Department of Surgery and Department of Biomedical and Clinical SciencesLinköping UniversityNorrköpingSweden
| | - Stephanie Bonn
- Clinical Epidemiology Division, Department of Medicine (Solna)Karolinska InstitutetStockholmSweden
| | - Sanna Svedjeholm
- Department of Surgery and Department of Biomedical and Clinical SciencesLinköping UniversityNorrköpingSweden
| | - Ylva Trolle Lagerros
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, and Center for ObesityAcademic Specialist Center, Stockholm Health ServicesStockholmSweden
| | - Ellen Andersson
- Department of Surgery and Department of Biomedical and Clinical SciencesLinköping UniversityNorrköpingSweden
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Hult M, Te Riele W, Fischer L, Röstad S, Orava K, Heikkinen T, Sandbu R, Juuti A, Bonn SE. Women's Reasons to Seek Bariatric Surgery and Their Expectations on the Surgery Outcome - a Multicenter Study from Five European Countries. Obes Surg 2022; 32:3722-3731. [PMID: 36151346 PMCID: PMC9613564 DOI: 10.1007/s11695-022-06280-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 09/07/2022] [Accepted: 09/14/2022] [Indexed: 12/03/2022]
Abstract
Purpose Understanding patients’ reasons for having bariatric surgery and their expectation on surgery outcomes is important to provide the best clinical practice and reduce unrealistic expectations. It is unknown if reasons and expectations differ between countries. We aimed to investigate the reasons for seeking bariatric surgery and expectations of surgical outcomes among patients in five European countries. Methods In total, 250 women accepted for bariatric surgery were recruited: 50 women each from Finland, Germany, Norway, Sweden, and the Netherlands. Participants ranked 14 reasons for seeking surgery, and reported the three primary reasons. They also reported expectations on weight loss and impact of surgery vs. lifestyle on weight loss outcomes. Results Mean age and body mass index were 42.9 ± 11.5 years and 45.1 ± 6.2 kg/m2, respectively. Weight loss and improved co-morbidity were ranked as the most important reasons. Participants expected to lose between 70.8 and 94.3% of their excessive weight. The expected impact of surgery as a driver of weight loss was higher in Germany and the Netherlands compared to in Finland, Norway, and Sweden where participants expected lifestyle changes to also have an impact. Conclusion Weight loss and improved co-morbidities were the main reasons for undergoing bariatric surgery. Expectations on weight loss were generally very high, but expectations of surgery vs. lifestyle as the main driver of weight loss differed between countries. While some patients understand the importance of lifestyle change and maintenance of a healthy lifestyle after surgery in order to obtain a successful weight loss, other may need additional counselling. Graphical Abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s11695-022-06280-w.
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Affiliation(s)
- Mari Hult
- Department for Upper GI Diseases, Karolinska University Hospital, Huddinge, Sweden.,Unit of Gastroenterology, Department of Medicine (Huddinge), Karolinska Institutet, Stockholm, Sweden
| | - Wouter Te Riele
- Department of Surgery, Sint Antonius Hospital, Nieuwegein, The Netherlands
| | - Lars Fischer
- Department of General, Visceral- and Metabolic Surgery, Baden-Baden, Germany
| | - Signe Röstad
- Department of Surgery, Vestfold Hospital Trust, Vestfold, Norway
| | - Kai Orava
- Department of Surgery, Seinäjoki Central Hospital, Seinäjoki, Finland
| | - Timo Heikkinen
- Department of Surgery, Suomen Terveystalo Oy, Oulu, Finland
| | - Rune Sandbu
- Department of Surgery, Vestfold Hospital Trust, Vestfold, Norway
| | - Anne Juuti
- Abdominal Center, Helsinki University Hospital, Helsinki, Finland
| | - Stephanie E Bonn
- Division of Clinical Epidemiology, Department of Medicine (Solna), Karolinska Institutet, T2, Karolinska University Hospital, 171 76, Stockholm, Sweden.
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8
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Agostini M, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Borowicz D, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D'Andrea V, Demidova EV, Di Marco N, Doroshkevich E, Egorov V, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hiller R, Hofmann W, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kirpichnikov IV, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lazzaro A, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Nemchenok I, Panas K, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Erratum: First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c^{2} with GERDA [Phys. Rev. Lett. 125, 011801 (2020)]. Phys Rev Lett 2022; 129:089901. [PMID: 36053710 DOI: 10.1103/physrevlett.129.089901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2022] [Indexed: 06/15/2023]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.125.011801.
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9
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Agostini M, Araujo G, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D’Andrea V, Demidova EV, Marco ND, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hiller R, Hofmann W, Huang J, Hult M, Inzhechik LV, Csáthy JJ, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kilgus K, Kirsch A, Kirpichnikov IV, Klimenko A, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lazzaro A, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Miloradovic M, Mingazheva R, Misiaszek M, Müller Y, Nemchenok I, Panas K, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Redchuk M, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, Sturm KV, Wagner V, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Pulse shape analysis in Gerda Phase II. Eur Phys J C Part Fields 2022; 82:284. [PMID: 35464994 PMCID: PMC8975797 DOI: 10.1140/epjc/s10052-022-10163-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 02/23/2022] [Indexed: 05/16/2023]
Abstract
The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double- β decay in 76 Ge using isotopically enriched high purity germanium detectors at the Laboratori Nazionali del Gran Sasso of INFN. After Phase I (2011-2013), the experiment benefited from several upgrades, including an additional active veto based on LAr instrumentation and a significant increase of mass by point-contact germanium detectors that improved the half-life sensitivity of Phase II (2015-2019) by an order of magnitude. At the core of the background mitigation strategy, the analysis of the time profile of individual pulses provides a powerful topological discrimination of signal-like and background-like events. Data from regular 228 Th calibrations and physics data were both considered in the evaluation of the pulse shape discrimination performance. In this work, we describe the various methods applied to the data collected in Gerda Phase II corresponding to an exposure of 103.7 kg year. These methods suppress the background by a factor of about 5 in the region of interest around Q β β = 2039 keV, while preserving ( 81 ± 3 ) % of the signal. In addition, an exhaustive list of parameters is provided which were used in the final data analysis.
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Affiliation(s)
- M. Agostini
- Department of Physics and Astronomy, University College London, London, UK
- Physik Department, Technische Universität München, Munich, Germany
| | - G. Araujo
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | | | - M. Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - I. Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L. Baudis
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - C. Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - E. Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, Milan, Italy
- INFN Milano Bicocca, Milan, Italy
| | - S. Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- NRNU MEPhI, Moscow, Russia
| | - A. Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L. Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V. Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - E. Bossio
- Physik Department, Technische Universität München, Munich, Germany
| | - V. Bothe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - V. Brudanin
- Joint Institute for Nuclear Research, Dubna, Russia
| | - R. Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A. Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | | | - A. Chernogorov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - T. Comellato
- Physik Department, Technische Universität München, Munich, Germany
| | - V. D’Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - E. V. Demidova
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - N. Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - E. Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - F. Fischer
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Fomina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A. Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A. Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C. Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P. Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V. Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Physik Department, Technische Universität München, Munich, Germany
| | | | | | - R. Hiller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
- Present Address: Institut für Experimentelle Teilchenphysik, Karlsruher Institut für Technologie, Karlsruhe, Germany
| | - W. Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - J. Huang
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L. V. Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Moscow Inst. of Physics and Technology, Moscow, Russia
| | | | - J. Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - V. Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - H. Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - T. Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - K. Kilgus
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - A. Kirsch
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Present Address: Robert Bosch GmbH, Stuttgart, Germany
| | - I. V. Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Dubna State University, Dubna, Russia
| | - K. T. Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - O. Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. N. Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - P. Krause
- Physik Department, Technische Universität München, Munich, Germany
| | - V. V. Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M. Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - A. Lazzaro
- Physik Department, Technische Universität München, Munich, Germany
| | - M. Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B. Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G. Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C. Macolino
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | | | - W. Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - M. Miloradovic
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - R. Mingazheva
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Misiaszek
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - Y. Müller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - I. Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
- Present Address: Physik Department, Technische Universität München, Munich, Germany
| | - K. Panas
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - L. Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K. Pelczar
- European Commission, JRC-Geel, Geel, Belgium
| | - L. Pertoldi
- Physik Department, Technische Universität München, Munich, Germany
- INFN Padova, Padua, Italy
| | - P. Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - A. Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - C. Ransom
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - L. Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Redchuk
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - S. Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - N. Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - C. Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - F. Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - S. Schönert
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Schreiner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Schütt
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. -K. Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
- Present Address: Nuclear Science Division, Berkeley, USA
| | - O. Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Schwarz
- Physik Department, Technische Universität München, Munich, Germany
| | | | - O. Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E. Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - H. Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D. Stukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - A. A. Vasenko
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - C. Vignoli
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - K. von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - V. Wagner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Present Address: Physik Department, Technische Universität München, Munich, Germany
| | - T. Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C. Wiesinger
- Physik Department, Technische Universität München, Munich, Germany
| | - M. Wojcik
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - E. Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - B. Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - I. Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S. V. Zhukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | | | - A. Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - K. Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G. Zuzel
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - GERDA collaboration
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
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10
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Agostini M, Araujo G, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D’Andrea V, Demidova EV, Marco ND, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hofmann W, Huang J, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kirpichnikov IV, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Müller Y, Nemchenok I, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Characterization of inverted coaxial 76 Ge detectors in GERDA for future double- β decay experiments. Eur Phys J C Part Fields 2021; 81:505. [PMID: 34720720 PMCID: PMC8549949 DOI: 10.1140/epjc/s10052-021-09184-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/27/2021] [Indexed: 05/28/2023]
Abstract
Neutrinoless double- β decay of 76 Ge is searched for with germanium detectors where source and detector of the decay are identical. For the success of future experiments it is important to increase the mass of the detectors. We report here on the characterization and testing of five prototype detectors manufactured in inverted coaxial (IC) geometry from material enriched to 88% in 76 Ge. IC detectors combine the large mass of the traditional semi-coaxial Ge detectors with the superior resolution and pulse shape discrimination power of point contact detectors which exhibited so far much lower mass. Their performance has been found to be satisfactory both when operated in vacuum cryostat and bare in liquid argon within the Gerda setup. The measured resolutions at the Q-value for double- β decay of 76 Ge ( Q β β = 2039 keV) are about 2.1 keV full width at half maximum in vacuum cryostat. After 18 months of operation within the ultra-low background environment of the GERmanium Detector Array (Gerda) experiment and an accumulated exposure of 8.5 kg · year, the background index after analysis cuts is measured to be 4 . 9 - 3.4 + 7.3 × 10 - 4 counts / ( keV · kg · year ) around Q β β . This work confirms the feasibility of IC detectors for the next-generation experiment Legend.
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Affiliation(s)
- M. Agostini
- Department of Physics and Astronomy, University College London, London, UK
- Physik Department, Technische Universität München, Munich, Germany
| | - G. Araujo
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | | | - M. Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - I. Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L. Baudis
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - C. Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - E. Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, Milan, Italy
- INFN Milano Bicocca, Milan, Italy
| | - S. Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- NRNU MEPhI, Moscow, Russia
| | - A. Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L. Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V. Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - E. Bossio
- Physik Department, Technische Universität München, Munich, Germany
| | - V. Bothe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - V. Brudanin
- Joint Institute for Nuclear Research, Dubna, Russia
| | - R. Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A. Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | | | - A. Chernogorov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - T. Comellato
- Physik Department, Technische Universität München, Munich, Germany
| | - V. D’Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - E. V. Demidova
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - N. Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - E. Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - F. Fischer
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Fomina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A. Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A. Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C. Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P. Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V. Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Physik Department, Technische Universität München, Munich, Germany
| | | | | | - W. Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - J. Huang
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L. V. Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Moscow Institute of Physics and Technology, Moscow, Russia
| | - J. Janicskó Csáthy
- Physik Department, Technische Universität München, Munich, Germany
- Leibniz-Institut für Kristallzüchtung, Berlin, Germany
| | - J. Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - V. Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - H. Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - T. Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - I. V. Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Dubna State University, Dubna, Russia
| | - R. Kneißl
- Max-Planck-Institut für Physik, Munich, Germany
| | - K. T. Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - O. Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. N. Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- NRNU MEPhI, Moscow, Russia
| | - P. Krause
- Physik Department, Technische Universität München, Munich, Germany
| | - V. V. Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M. Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - M. Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B. Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G. Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C. Macolino
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | | | - W. Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - M. Miloradovic
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - R. Mingazheva
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Misiaszek
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - P. Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Müller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - I. Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
- Dubna State University, Dubna, Russia
| | - L. Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K. Pelczar
- Institute of Physics, Jagiellonian University, Cracow, Poland
- European Commission, JRC-Geel, Geel, Belgium
| | - L. Pertoldi
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - P. Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - A. Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - C. Ransom
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - L. Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - S. Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - N. Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - C. Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - F. Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - S. Schönert
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Schreiner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Schütt
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A.-K. Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - O. Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Schwarz
- Physik Department, Technische Universität München, Munich, Germany
| | | | - O. Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E. Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - H. Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D. Stukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - A. A. Vasenko
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - C. Vignoli
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - K. von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - T. Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C. Wiesinger
- Physik Department, Technische Universität München, Munich, Germany
| | - M. Wojcik
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - E. Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - B. Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - I. Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S. V. Zhukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | | | - A. Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - K. Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G. Zuzel
- Institute of Physics, Jagiellonian University, Cracow, Poland
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11
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Agostini M, Araujo G, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D’Andrea V, Demidova EV, Marco ND, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hiller R, Hofmann W, Huang J, Hult M, Inzhechik LV, Csáthy JJ, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kirpichnikov IV, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Müller Y, Nemchenok I, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Calibration of the Gerda experiment. Eur Phys J C Part Fields 2021; 81:682. [PMID: 34776783 PMCID: PMC8550656 DOI: 10.1140/epjc/s10052-021-09403-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2021] [Accepted: 07/01/2021] [Indexed: 05/16/2023]
Abstract
The GERmanium Detector Array (Gerda) collaboration searched for neutrinoless double- β decay in 76 Ge with an array of about 40 high-purity isotopically-enriched germanium detectors. The experimental signature of the decay is a monoenergetic signal at Q β β = 2039.061 ( 7 ) keV in the measured summed energy spectrum of the two emitted electrons. Both the energy reconstruction and resolution of the germanium detectors are crucial to separate a potential signal from various backgrounds, such as neutrino-accompanied double- β decays allowed by the Standard Model. The energy resolution and stability were determined and monitored as a function of time using data from regular 228 Th calibrations. In this work, we describe the calibration process and associated data analysis of the full Gerda dataset, tailored to preserve the excellent resolution of the individual germanium detectors when combining data over several years.
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Affiliation(s)
- M. Agostini
- Department of Physics and Astronomy, University College London, London, UK
- Physik Department, Technische Universität München, Munich, Germany
| | - G. Araujo
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | | | - M. Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - I. Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L. Baudis
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - C. Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - E. Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, Milan, Italy
- INFN Milano Bicocca, Milan, Italy
| | - S. Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- NRNU MEPhI, Moscow, Russia
| | - A. Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L. Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V. Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - E. Bossio
- Physik Department, Technische Universität München, Munich, Germany
| | - V. Bothe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - V. Brudanin
- Joint Institute for Nuclear Research, Dubna, Russia
| | - R. Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - A. Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | | | - A. Chernogorov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - T. Comellato
- Physik Department, Technische Universität München, Munich, Germany
| | - V. D’Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - E. V. Demidova
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - N. Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - E. Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - F. Fischer
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Fomina
- Joint Institute for Nuclear Research, Dubna, Russia
| | - A. Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A. Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C. Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P. Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V. Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Physik Department, Technische Universität München, Munich, Germany
| | | | | | - R. Hiller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - W. Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - J. Huang
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L. V. Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Moscow Inst. of Physics and Technology, Moscow, Russia
| | - J. Janicskó Csáthy
- Physik Department, Technische Universität München, Munich, Germany
- Leibniz-Institut für Kristallzüchtung, Berlin, Germany
| | - J. Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - V. Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - H. Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - T. Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - I. V. Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Dubna State University, Dubna, Russia
| | - R. Kneißl
- Max-Planck-Institut für Physik, Munich, Germany
| | - K. T. Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - O. Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. N. Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - P. Krause
- Physik Department, Technische Universität München, Munich, Germany
| | - V. V. Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M. Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - M. Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B. Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G. Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C. Macolino
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | | | - W. Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - M. Miloradovic
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - R. Mingazheva
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - M. Misiaszek
- Institute of Physics, Jagiellonian University, Kraków, Poland
| | - P. Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Müller
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - I. Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
- Dubna State University, Dubna, Russia
| | - L. Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K. Pelczar
- Institute of Physics, Jagiellonian University, Kraków, Poland
- European Commission, JRC-Geel, Geel, Belgium
| | - L. Pertoldi
- Physik Department, Technische Universität München, Munich, Germany
- INFN Padova, Padua, Italy
| | - P. Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - A. Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - C. Ransom
- Physik-Institut, Universität Zürich, Zurich, Switzerland
| | - L. Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - S. Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, Milan, Italy
| | - N. Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - C. Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - F. Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - S. Schönert
- Physik Department, Technische Universität München, Munich, Germany
| | - J. Schreiner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Schütt
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A-K. Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - O. Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Schwarz
- Physik Department, Technische Universität München, Munich, Germany
| | | | - O. Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E. Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | | | - H. Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - D. Stukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - A. A. Vasenko
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - C. Vignoli
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi, Italy
| | - K. von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - T. Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C. Wiesinger
- Physik Department, Technische Universität München, Munich, Germany
| | - M. Wojcik
- Institute of Physics, Jagiellonian University, Kraków, Poland
| | - E. Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - B. Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - I. Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S. V. Zhukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | | | - A. Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | | | - K. Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G. Zuzel
- Institute of Physics, Jagiellonian University, Kraków, Poland
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12
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Agostini M, Araujo GR, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Biancacci V, Borowicz D, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D'Andrea V, Demidova EV, Di Marco N, Doroshkevich E, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hiller R, Hofmann W, Huang J, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kirpichnikov IV, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lazzaro A, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Manzanillas L, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Müller Y, Nemchenok I, Panas K, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Shtembari L, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Final Results of GERDA on the Search for Neutrinoless Double-β Decay. Phys Rev Lett 2020; 125:252502. [PMID: 33416389 DOI: 10.1103/physrevlett.125.252502] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 10/30/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
The GERmanium Detector Array (GERDA) experiment searched for the lepton-number-violating neutrinoless double-β (0νββ) decay of ^{76}Ge, whose discovery would have far-reaching implications in cosmology and particle physics. By operating bare germanium diodes, enriched in ^{76}Ge, in an active liquid argon shield, GERDA achieved an unprecedently low background index of 5.2×10^{-4} counts/(keV kg yr) in the signal region and met the design goal to collect an exposure of 100 kg yr in a background-free regime. When combined with the result of Phase I, no signal is observed after 127.2 kg yr of total exposure. A limit on the half-life of 0νββ decay in ^{76}Ge is set at T_{1/2}>1.8×10^{26} yr at 90% C.L., which coincides with the sensitivity assuming no signal.
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Affiliation(s)
- M Agostini
- Department of Physics and Astronomy, University College London, London WC1E 6BT, United Kingdom
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - G R Araujo
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - A M Bakalyarov
- National Research Centre "Kurchatov Institute", 123182 Moscow, Russia
| | - M Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - I Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - L Baudis
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - C Bauer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - E Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, 20126 Milan, Italy
- INFN Milano Bicocca, 20126 Milan, Italy
| | - S Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", 117259 Moscow, Russia
| | - A Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - L Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - V Biancacci
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - D Borowicz
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - E Bossio
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - V Bothe
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - V Brudanin
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - R Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - A Caldwell
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | | | - A Chernogorov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", 117259 Moscow, Russia
- National Research Centre "Kurchatov Institute", 123182 Moscow, Russia
| | - T Comellato
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - V D'Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, 67100 L'Aquila, Italy
| | - E V Demidova
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", 117259 Moscow, Russia
| | - N Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - E Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - F Fischer
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - M Fomina
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Gangapshev
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - A Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - C Gooch
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - P Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - V Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - K Gusev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- National Research Centre "Kurchatov Institute", 123182 Moscow, Russia
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - J Hakenmüller
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | | | - R Hiller
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - W Hofmann
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - J Huang
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - M Hult
- European Commission, JRC-Geel, 2442 Geel, Belgium
| | - L V Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - J Janicskó Csáthy
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - J Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - M Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - V Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - Y Kermaïdic
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - H Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - T Kihm
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - I V Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", 117259 Moscow, Russia
| | - A Klimenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - R Kneißl
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - K T Knöpfle
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - O Kochetov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V N Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - P Krause
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - V V Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - M Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - A Lazzaro
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - M Lindner
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - I Lippi
- INFN Padova, 35131 Padua, Italy
| | - A Lubashevskiy
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - G Lutter
- European Commission, JRC-Geel, 2442 Geel, Belgium
| | - C Macolino
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - B Majorovits
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - W Maneschg
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - L Manzanillas
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - M Miloradovic
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - R Mingazheva
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - M Misiaszek
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - P Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - Y Müller
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - I Nemchenok
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - K Panas
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - L Pandola
- INFN Laboratori Nazionali del Sud, 95123 Catania, Italy
| | - K Pelczar
- European Commission, JRC-Geel, 2442 Geel, Belgium
| | - L Pertoldi
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, 20133 Milan, Italy
| | - A Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, 20133 Milan, Italy
| | - C Ransom
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - L Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - S Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, 20133 Milan, Italy
| | - N Rumyantseva
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- National Research Centre "Kurchatov Institute", 123182 Moscow, Russia
| | - C Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, 67100 L'Aquila, Italy
| | - S Schönert
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - J Schreiner
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Schütt
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - A-K Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - O Schulz
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - M Schwarz
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | | | - O Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - E Shevchik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - M Shirchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - L Shtembari
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - H Simgen
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - A Smolnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - D Stukov
- National Research Centre "Kurchatov Institute", 123182 Moscow, Russia
| | - A A Vasenko
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", 117259 Moscow, Russia
| | - A Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - C Vignoli
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - K von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - T Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - C Wiesinger
- Physik Department, Technische Universität München, 85748 Munich, Germany
| | - M Wojcik
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - E Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - B Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - I Zhitnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S V Zhukov
- National Research Centre "Kurchatov Institute", 123182 Moscow, Russia
| | - D Zinatulina
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - A J Zsigmond
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - G Zuzel
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
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13
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Bonn SE, Hult M, Spetz K, Löf M, Andersson E, Wiren M, Trolle Lagerros Y. App Technology to Support Physical Activity and Intake of Vitamins and Minerals After Bariatric Surgery (the PromMera Study): Protocol of a Randomized Controlled Clinical Trial. JMIR Res Protoc 2020; 9:e19624. [PMID: 32795990 PMCID: PMC7455871 DOI: 10.2196/19624] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/24/2020] [Accepted: 06/25/2020] [Indexed: 01/24/2023] Open
Abstract
Background To optimize postoperative outcomes after bariatric surgery, lifestyle changes including increased physical activity are needed. Micronutrient deficiency after surgery is also common and daily supplementation is recommended. Objective The aim of the PromMera study is to evaluate the effects of a 12-week smartphone app intervention on promotion of physical activity (primary outcome) and adherence to postsurgery vitamin and mineral supplementation, as well as on other lifestyle factors and overall health in patients undergoing bariatric surgery. Methods The PromMera study is a two-arm, randomized controlled trial comprising patients undergoing bariatric surgery. Participants are randomized postsurgery 1:1 to either the intervention group (ie, use of the PromMera app for 12 weeks) or the control group receiving only standard care. Clinical and lifestyle variables are assessed pre- and postsurgery after 18 weeks (postintervention assessment), 6 months, 1 year, and 2 years. Assessments include body composition using Tanita or BOD POD analyzers, muscle function using handgrip, biomarkers in blood, and an extensive questionnaire on lifestyle factors. Physical activity is objectively measured using the ActiGraph wGT3X-BT triaxial accelerometer. Results A total of 154 participants have been enrolled in the study. The last study participant was recruited in May 2019. Data collection will be complete in May 2021. Conclusions Implementing lifestyle changes are crucial after bariatric surgery and new ways to reach patients and support such changes are needed. An app-based intervention is easily delivered at any time and can be a key factor in the adoption of healthier behavioral patterns in this rapidly growing group of patients. Trial Registration ClinicalTrials.gov NCT03480464; https://clinicaltrials.gov/ct2/show/NCT03480464 International Registered Report Identifier (IRRID) DERR1-10.2196/19624
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Affiliation(s)
- Stephanie Erika Bonn
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden
| | - Mari Hult
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden.,Division of Upper Abdominal Surgery, Karolinska University Hospital, Stockholm, Sweden
| | - Kristina Spetz
- Department of Surgery, Linköping University, Norrköping, Sweden.,Department of Biomedical and Clinical Sciences, Linköping University, Norrköping, Sweden
| | - Marie Löf
- Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden.,Department of Biosciences and Nutrition, Karolinska Institutet, Stockholm, Sweden
| | - Ellen Andersson
- Department of Surgery, Linköping University, Norrköping, Sweden.,Department of Biomedical and Clinical Sciences, Linköping University, Norrköping, Sweden
| | - Mikael Wiren
- Department of Surgery, Ersta Hospital, Stockholm, Sweden
| | - Ylva Trolle Lagerros
- Clinical Epidemiology Division, Department of Medicine (Solna), Karolinska Institutet, Stockholm, Sweden.,Center for Obesity, Academic Specialist Center, Stockholm Health Services, Stockholm, Sweden
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14
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Agostini M, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Borowicz D, Bossio E, Bothe V, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D'Andrea V, Demidova EV, Di Marco N, Doroshkevich E, Egorov V, Fischer F, Fomina M, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hemmer S, Hiller R, Hofmann W, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Khushbakht H, Kihm T, Kirpichnikov IV, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lazzaro A, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Nemchenok I, Panas K, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Rauscher L, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schönert S, Schreiner J, Schütt M, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Simgen H, Smolnikov A, Stukov D, Vasenko AA, Veresnikova A, Vignoli C, von Sturm K, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zatschler B, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. First Search for Bosonic Superweakly Interacting Massive Particles with Masses up to 1 MeV/c^{2} with GERDA. Phys Rev Lett 2020; 125:011801. [PMID: 32678643 DOI: 10.1103/physrevlett.125.011801] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Accepted: 05/26/2020] [Indexed: 06/11/2023]
Abstract
We present the first search for bosonic superweakly interacting massive particles (super-WIMPs) as keV-scale dark matter candidates performed with the GERDA experiment. GERDA is a neutrinoless double-β decay experiment which operates high-purity germanium detectors enriched in ^{76}Ge in an ultralow background environment at the Laboratori Nazionali del Gran Sasso (LNGS) of INFN in Italy. Searches were performed for pseudoscalar and vector particles in the mass region from 60 keV/c^{2} to 1 MeV/c^{2}. No evidence for a dark matter signal was observed, and the most stringent constraints on the couplings of super-WIMPs with masses above 120 keV/c^{2} have been set. As an example, at a mass of 150 keV/c^{2} the most stringent direct limits on the dimensionless couplings of axionlike particles and dark photons to electrons of g_{ae}<3×10^{-12} and α^{'}/α<6.5×10^{-24} at 90% credible interval, respectively, were obtained.
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Affiliation(s)
- M Agostini
- Physik Department, Technische Universität München, 85748 München, Germany
| | - A M Bakalyarov
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
| | - M Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - I Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - L Baudis
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - C Bauer
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - E Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, 20126 Milan, Italy
- INFN Milano Bicocca, 20126 Milan, Italy
| | - S Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," 117259 Moscow, Russia
| | - A Bettini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - L Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - D Borowicz
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - E Bossio
- Physik Department, Technische Universität München, 85748 München, Germany
| | - V Bothe
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - V Brudanin
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - R Brugnera
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - A Caldwell
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | | | - A Chernogorov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," 117259 Moscow, Russia
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
| | - T Comellato
- Physik Department, Technische Universität München, 85748 München, Germany
| | - V D'Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, 67100 L'Aquila, Italy
| | - E V Demidova
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," 117259 Moscow, Russia
| | - N Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - E Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - V Egorov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - F Fischer
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - M Fomina
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Gangapshev
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - A Garfagnini
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - C Gooch
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - P Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - V Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - K Gusev
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
- Physik Department, Technische Universität München, 85748 München, Germany
| | - J Hakenmüller
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | | | - R Hiller
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - W Hofmann
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Hult
- European Commission, JRC-Geel, 2440 Geel, Belgium
| | - L V Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - J Janicskó Csáthy
- Physik Department, Technische Universität München, 85748 München, Germany
| | - J Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - M Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - V Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - Y Kermaïdic
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - H Khushbakht
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - T Kihm
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - I V Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," 117259 Moscow, Russia
| | - A Klimenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - R Kneißl
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - K T Knöpfle
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - O Kochetov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - V N Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," 117259 Moscow, Russia
| | - P Krause
- Physik Department, Technische Universität München, 85748 München, Germany
| | - V V Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - M Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - A Lazzaro
- Physik Department, Technische Universität München, 85748 München, Germany
| | - M Lindner
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - I Lippi
- INFN Padova, 35131 Padua, Italy
| | - A Lubashevskiy
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - B Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - G Lutter
- European Commission, JRC-Geel, 2440 Geel, Belgium
| | - C Macolino
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - B Majorovits
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - W Maneschg
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Miloradovic
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - R Mingazheva
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - M Misiaszek
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - P Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - I Nemchenok
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - K Panas
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - L Pandola
- INFN Laboratori Nazionali del Sud, 95123 Catania, Italy
| | - K Pelczar
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - L Pertoldi
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, 20133 Milan, Italy
| | - A Pullia
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, 20133 Milan, Italy
| | - C Ransom
- Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland
| | - L Rauscher
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - S Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano and INFN Milano, 20133 Milan, Italy
| | - N Rumyantseva
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
| | - C Sada
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, 67100 L'Aquila, Italy
| | - S Schönert
- Physik Department, Technische Universität München, 85748 München, Germany
| | - J Schreiner
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - M Schütt
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - A-K Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - O Schulz
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - M Schwarz
- Physik Department, Technische Universität München, 85748 München, Germany
| | | | - O Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - E Shevchik
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - M Shirchenko
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - H Simgen
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - A Smolnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
- Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany
| | - D Stukov
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
| | - A A Vasenko
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute," 117259 Moscow, Russia
| | - A Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - C Vignoli
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, 67100 Assergi, Italy
| | - K von Sturm
- Dipartimento di Fisica e Astronomia, Università degli Studi di Padova, 35131 Padua, Italy
- INFN Padova, 35131 Padua, Italy
| | - T Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - C Wiesinger
- Physik Department, Technische Universität München, 85748 München, Germany
| | - M Wojcik
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
| | - E Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, 117312 Moscow, Russia
| | - B Zatschler
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - I Zhitnikov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S V Zhukov
- National Research Centre "Kurchatov Institute," 123182 Moscow, Russia
| | - D Zinatulina
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - A Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, 72076 Tübingen, Germany
| | - A J Zsigmond
- Max-Planck-Institut für Physik, 80805 Munich, Germany
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - G Zuzel
- Institute of Physics, Jagiellonian University, 31-007 Cracow, Poland
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15
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Sobiech-Matura K, Lutter G, Van Ammel R, Marissens G, Hult M, Emteborg H. Evaluation of a proficiency test of 131I, 134Cs and 137Cs in maize powder. Appl Radiat Isot 2020; 162:109156. [PMID: 32310089 DOI: 10.1016/j.apradiso.2020.109156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 01/03/2020] [Accepted: 03/24/2020] [Indexed: 10/24/2022]
Abstract
In 2017, JRC-Geel organised a proficiency test for 120 participants on the massic activity determination of 131I, 134Cs and 137Cs in maize powder. The proficiency test reference material was produced by spiking blank maize powder. The material was characterised for its radioactive content using γ-ray spectrometry. The z scores of the reported massic activity were acceptable in 92% of the results for 131I, and in 94% for both 134Cs and 137Cs. The ζ scores were consistent with the reference value for 66% of the results for 131I, 56% for 134Cs and 68% for 137Cs.
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Affiliation(s)
- K Sobiech-Matura
- European Commission, Joint Research Centre, Retieseweg 111, B-2440, Geel, Belgium.
| | - G Lutter
- European Commission, Joint Research Centre, Retieseweg 111, B-2440, Geel, Belgium
| | - R Van Ammel
- European Commission, Joint Research Centre, Retieseweg 111, B-2440, Geel, Belgium
| | - G Marissens
- European Commission, Joint Research Centre, Retieseweg 111, B-2440, Geel, Belgium
| | - M Hult
- European Commission, Joint Research Centre, Retieseweg 111, B-2440, Geel, Belgium
| | - H Emteborg
- European Commission, Joint Research Centre, Retieseweg 111, B-2440, Geel, Belgium
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16
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Haraldsson E, Kylänpää L, Grönroos J, Saarela A, Toth E, Qvigstad G, Hult M, Lindström O, Laine S, Karjula H, Hauge T, Sadik R, Arnelo U. Macroscopic appearance of the major duodenal papilla influences bile duct cannulation: a prospective multicenter study by the Scandinavian Association for Digestive Endoscopy Study Group for ERCP. Gastrointest Endosc 2019; 90:957-963. [PMID: 31326385 DOI: 10.1016/j.gie.2019.07.014] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Accepted: 07/10/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Certain appearances of the major duodenal papilla have been claimed to make cannulation more difficult during ERCP. This study uses a validated classification of the endoscopic appearance of the major duodenal papilla to determine if certain types of papilla predispose to difficult cannulation. METHODS Patients with a naïve papilla scheduled for ERCP were included. The papilla was classified into 1 of 4 papilla types before cannulation started. Time to successful bile duct cannulation, attempts, and number of pancreatic duct passages were recorded. Difficult cannulation was defined as after 5 minutes, 5 attempts, or 2 pancreatic guidewire passages. RESULTS A total of 1401 patients were included from 9 different centers in the Nordic countries. The overall frequency of difficult cannulation was 42% (95% confidence interval [CI], 39%-44%). Type 2 small papilla (52%; 95% CI, 45%-59%) and type 3 protruding or pendulous papilla (48%; 95% CI, 42%-53%) were more frequently difficult to cannulate compared with type 1 regular papilla (36%; 95% CI, 33%-40%; both P < .001). If an inexperienced endoscopist started cannulation, the frequency of failed cannulation increased from 1.9% to 6.3% (P < .0001), even though they were replaced by a senior endoscopist after 5 minutes. CONCLUSIONS The endoscopic appearance of the major duodenal papilla influences bile duct cannulation. Small type 2 and protruding or pendulous type 3 papillae are more frequently difficult to cannulate. In addition, cannulation might even fail more frequently if a beginner starts cannulation. These findings should be taken into consideration when performing studies regarding bile duct cannulation and in training future generations of endoscopists.
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Affiliation(s)
- Erik Haraldsson
- Division of Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Surgery, Skaraborg Hospital, Skövde, Sweden
| | - Leena Kylänpää
- Department of Gastroenterological Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Juha Grönroos
- Department of Surgery, University of Turku, and Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | - Arto Saarela
- Department of Surgery, Oulu University Hospital, Oulu, Finland
| | - Ervin Toth
- Department of Gastroenterology, Skåne University Hospital, Lund University, Malmö, Sweden
| | - Gunnar Qvigstad
- Department of Gastroenterology and Hepatology, St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Mari Hult
- Department of Medicine, Solna, Unit of Clinical Epidemiology, Karolinska Institutet, Stockholm, Sweden; Department of Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden
| | - Outi Lindström
- Department of Gastroenterological Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Simo Laine
- Department of Surgery, University of Turku, and Division of Digestive Surgery and Urology, Turku University Hospital, Turku, Finland
| | - Heikki Karjula
- Department of Surgery, Oulu University Hospital, Oulu, Finland
| | - Truls Hauge
- Department of Gastroenterology, Oslo University Hospital and Institute of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Riadh Sadik
- Department of Gastroenterology, Sahlgrenska Academy, Gothenburg, Sweden
| | - Urban Arnelo
- Division of Surgery, Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Upper GI Diseases, Karolinska University Hospital, Stockholm, Sweden
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17
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Agostini M, Bakalyarov AM, Andreotti E, Balata M, Barabanov I, Baudis L, Barros N, Bauer C, Bellotti E, Belogurov S, Benato G, Bettini A, Bezrukov L, Bode T, Borowicz D, Brudanin V, Brugnera R, Budjáš D, Caldwell A, Cattadori C, Chernogorov A, D’Andrea V, Demidova EV, Di Marco N, Domula A, Doroshkevich E, Egorov V, Falkenstein R, Freund K, Gangapshev A, Garfagnini A, Gooch C, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hegai A, Heisel M, Hemmer S, Hiller R, Hofmann W, Hult M, Inzhechik LV, Csáthy JJ, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Kihm T, Kirpichnikov IV, Kirsch A, Kish A, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Kuzminov VV, Laubenstein M, Lazzaro A, Lehnert B, Liao Y, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Marissens G, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Nemchenok I, Panas K, Pandola L, Pelczar K, Pullia A, Ransom C, Riboldi S, Rumyantseva N, Sada C, Salamida F, Salathe M, Schmitt C, Schneider B, Schönert S, Schütz AK, Schulz O, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Simgen H, Smolnikov A, Stanco L, Vanhoefer L, Vasenko AA, Veresnikova A, von Sturm K, Wagner V, Wegmann A, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zhitnikov I, Zhukov SV, Zinatulina D, Zsigmond AJ, Zuber K, Zuzel G. Characterization of 30 76 Ge enriched Broad Energy Ge detectors for GERDA Phase II. Eur Phys J C Part Fields 2019; 79:978. [PMID: 31885491 PMCID: PMC6892349 DOI: 10.1140/epjc/s10052-019-7353-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Accepted: 09/28/2019] [Indexed: 05/28/2023]
Abstract
The GERmanium Detector Array (Gerda) is a low background experiment located at the Laboratori Nazionali del Gran Sasso in Italy, which searches for neutrinoless double-beta decay of 76 Ge into 76 Se+2e - . Gerda has been conceived in two phases. Phase II, which started in December 2015, features several novelties including 30 new 76Ge enriched detectors. These were manufactured according to the Broad Energy Germanium (BEGe) detector design that has a better background discrimination capability and energy resolution compared to formerly widely-used types. Prior to their installation, the new BEGe detectors were mounted in vacuum cryostats and characterized in detail in the Hades underground laboratory in Belgium. This paper describes the properties and the overall performance of these detectors during operation in vacuum. The characterization campaign provided not only direct input for Gerda Phase II data collection and analyses, but also allowed to study detector phenomena, detector correlations as well as to test the accuracy of pulse shape simulation codes.
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Affiliation(s)
- M. Agostini
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | | | | | - M. Balata
- INFN Laboratori Nazionali del Gran Sasso, LNGS, Assergi, Italy
| | - I. Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - L. Baudis
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - N. Barros
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C. Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - E. Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, Milan, Italy
- INFN Milano Bicocca, Milan, Italy
| | - S. Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - G. Benato
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - A. Bettini
- Dipartimento di Fisica e Astronomia dell’Università di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - L. Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - T. Bode
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | - D. Borowicz
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. Brudanin
- Joint Institute for Nuclear Research, Dubna, Russia
| | - R. Brugnera
- Dipartimento di Fisica e Astronomia dell’Università di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - D. Budjáš
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | - A. Caldwell
- Max-Planck-Institut für Physik, Munich, Germany
| | | | - A. Chernogorov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - V. D’Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - E. V. Demidova
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - N. Di Marco
- INFN Laboratori Nazionali del Gran Sasso, LNGS, Assergi, Italy
| | - A. Domula
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - E. Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - V. Egorov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - R. Falkenstein
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - K. Freund
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - A. Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - A. Garfagnini
- Dipartimento di Fisica e Astronomia dell’Università di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - C. Gooch
- Max-Planck-Institut für Physik, Munich, Germany
| | - P. Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - V. Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. Gusev
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | | | - A. Hegai
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Heisel
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - R. Hiller
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - W. Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - M. Hult
- European Commission, JRC-Geel, Geel, Belgium
| | - L. V. Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - J. Janicskó Csáthy
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | - J. Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - M. Junker
- INFN Laboratori Nazionali del Gran Sasso, LNGS, Assergi, Italy
| | - V. Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - Y. Kermaïdic
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - T. Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - I. V. Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Kirsch
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Kish
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - A. Klimenko
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - R. Kneißl
- Max-Planck-Institut für Physik, Munich, Germany
| | - K. T. Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - O. Kochetov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - V. N. Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - V. V. Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - M. Laubenstein
- INFN Laboratori Nazionali del Gran Sasso, LNGS, Assergi, Italy
| | - A. Lazzaro
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | - B. Lehnert
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - Y. Liao
- Max-Planck-Institut für Physik, Munich, Germany
| | - M. Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - B. Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - G. Lutter
- European Commission, JRC-Geel, Geel, Belgium
| | - C. Macolino
- INFN Laboratori Nazionali del Gran Sasso, LNGS, Assergi, Italy
| | | | - W. Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | - M. Miloradovic
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - R. Mingazheva
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - M. Misiaszek
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - P. Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - I. Nemchenok
- Joint Institute for Nuclear Research, Dubna, Russia
| | - K. Panas
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - L. Pandola
- INFN Laboratori Nazionali del Sud, Catania, Italy
| | - K. Pelczar
- INFN Laboratori Nazionali del Gran Sasso, LNGS, Assergi, Italy
| | - A. Pullia
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, Milan, Italy
| | - C. Ransom
- Physik Institut der Universität Zürich, Zurich, Switzerland
| | - S. Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, Milan, Italy
| | - N. Rumyantseva
- Joint Institute for Nuclear Research, Dubna, Russia
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | - C. Sada
- Dipartimento di Fisica e Astronomia dell’Università di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - F. Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell’Aquila, L’Aquila, Italy
| | - M. Salathe
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - C. Schmitt
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - B. Schneider
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - S. Schönert
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | - A.-K. Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen, Germany
| | - O. Schulz
- Max-Planck-Institut für Physik, Munich, Germany
| | | | - O. Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - E. Shevchik
- Joint Institute for Nuclear Research, Dubna, Russia
| | | | - H. Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Smolnikov
- Joint Institute for Nuclear Research, Dubna, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | - A. A. Vasenko
- Institute for Theoretical and Experimental Physics, NRC “Kurchatov Institute”, Moscow, Russia
| | - A. Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - K. von Sturm
- Dipartimento di Fisica e Astronomia dell’Università di Padova, Padua, Italy
- INFN Padova, Padua, Italy
| | - V. Wagner
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - A. Wegmann
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | - T. Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - C. Wiesinger
- Physik Department and Excellence Cluster Universe, Technische Universität München, Munich, Germany
| | - M. Wojcik
- Institute of Physics, Jagiellonian University, Cracow, Poland
| | - E. Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow, Russia
| | - I. Zhitnikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - S. V. Zhukov
- National Research Centre “Kurchatov Institute”, Moscow, Russia
| | | | | | - K. Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden, Germany
| | - G. Zuzel
- Institute of Physics, Jagiellonian University, Cracow, Poland
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18
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Agostini M, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Borowicz D, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D'Andrea V, Demidova EV, Di Marco N, Domula A, Doroshkevich E, Egorov V, Falkenstein R, Fomina M, Gangapshev A, Garfagnini A, Giordano M, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hegai A, Heisel M, Hemmer S, Hiller R, Hofmann W, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaïdic Y, Kihm T, Kirpichnikov IV, Kirsch A, Kish A, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Krause P, Kuzminov VV, Laubenstein M, Lazzaro A, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Nemchenok I, Panas K, Pandola L, Pelczar K, Pertoldi L, Piseri P, Pullia A, Ransom C, Riboldi S, Rumyantseva N, Sada C, Sala E, Salamida F, Schmitt C, Schneider B, Schönert S, Schütz AK, Schulz O, Schwarz M, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Simgen H, Smolnikov A, Stanco L, Stukov D, Vanhoefer L, Vasenko AA, Veresnikova A, von Sturm K, Wagner V, Wegmann A, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Probing Majorana neutrinos with double-β decay. Science 2019; 365:1445-1448. [PMID: 31488705 DOI: 10.1126/science.aav8613] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 08/20/2019] [Indexed: 11/02/2022]
Abstract
A discovery that neutrinos are Majorana fermions would have profound implications for particle physics and cosmology. The Majorana character of neutrinos would make possible the neutrinoless double-β (0νββ) decay, a matter-creating process without the balancing emission of antimatter. The GERDA Collaboration searches for the 0νββ decay of 76Ge by operating bare germanium detectors in an active liquid argon shield. With a total exposure of 82.4 kg⋅year, we observe no signal and derive a lower half-life limit of T 1/2 > 0.9 × 1026 years (90% C.L.). Our T 1/2 sensitivity, assuming no signal, is 1.1 × 1026 years. Combining the latter with those from other 0νββ decay searches yields a sensitivity to the effective Majorana neutrino mass of 0.07 to 0.16 electron volts.
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Affiliation(s)
- M Agostini
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - A M Bakalyarov
- National Research Centre "Kurchatov Institute," Moscow 123182, Russia
| | - M Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, I-67100 Assergi, Italy
| | - I Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - L Baudis
- Physik Institut der Universität Zürich, CH-8057 Zurich, Switzerland
| | - C Bauer
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - E Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, I-20126 Milan, Italy.,INFN Milano Bicocca, I-20126 Milan, Italy
| | - S Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia.,Institute for Theoretical and Experimental Physics, Moscow 117259, Russia
| | - A Bettini
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35121 Padua, Italy.,INFN Padova, I-35131 Padua, Italy
| | - L Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - D Borowicz
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - V Brudanin
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - R Brugnera
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35121 Padua, Italy.,INFN Padova, I-35131 Padua, Italy
| | - A Caldwell
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | | | - A Chernogorov
- Institute for Theoretical and Experimental Physics, Moscow 117259, Russia
| | - T Comellato
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - V D'Andrea
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, I-67100 L'Aquila, Italy
| | - E V Demidova
- Institute for Theoretical and Experimental Physics, Moscow 117259, Russia
| | - N Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, I-67100 Assergi, Italy
| | - A Domula
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, D-01069 Dresden, Germany
| | - E Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - V Egorov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - R Falkenstein
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - M Fomina
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A Gangapshev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - A Garfagnini
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35121 Padua, Italy.,INFN Padova, I-35131 Padua, Italy
| | - M Giordano
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, I-67100 L'Aquila, Italy
| | - P Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - V Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - K Gusev
- Physik Department, Technische Universität München, D-85748 Munich, Germany.,National Research Centre "Kurchatov Institute," Moscow 123182, Russia.,Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - J Hakenmüller
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - A Hegai
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - M Heisel
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - S Hemmer
- INFN Padova, I-35131 Padua, Italy
| | - R Hiller
- Physik Institut der Universität Zürich, CH-8057 Zurich, Switzerland
| | - W Hofmann
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - M Hult
- European Commission, JRC-Geel, B-2440 Geel, Belgium
| | - L V Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - J Janicskó Csáthy
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - J Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - M Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, I-67100 Assergi, Italy
| | - V Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - Y Kermaïdic
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - T Kihm
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - I V Kirpichnikov
- Institute for Theoretical and Experimental Physics, Moscow 117259, Russia
| | - A Kirsch
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - A Kish
- Physik Institut der Universität Zürich, CH-8057 Zurich, Switzerland
| | - A Klimenko
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany.,Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - R Kneißl
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | - K T Knöpfle
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany.
| | - O Kochetov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - V N Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia.,Institute for Theoretical and Experimental Physics, Moscow 117259, Russia
| | - P Krause
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - V V Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - M Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, I-67100 Assergi, Italy
| | - A Lazzaro
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - M Lindner
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - I Lippi
- INFN Padova, I-35131 Padua, Italy
| | - A Lubashevskiy
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - B Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - G Lutter
- European Commission, JRC-Geel, B-2440 Geel, Belgium
| | - C Macolino
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, I-67100 Assergi, Italy
| | - B Majorovits
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | - W Maneschg
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - M Miloradovic
- Physik Institut der Universität Zürich, CH-8057 Zurich, Switzerland
| | - R Mingazheva
- Physik Institut der Universität Zürich, CH-8057 Zurich, Switzerland
| | - M Misiaszek
- Institute of Physics, Jagiellonian University, Cracow 40-348, Poland
| | - P Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - I Nemchenok
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - K Panas
- Institute of Physics, Jagiellonian University, Cracow 40-348, Poland
| | - L Pandola
- INFN Laboratori Nazionali del Sud, I-95123 Catania, Italy
| | - K Pelczar
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, I-67100 Assergi, Italy
| | - L Pertoldi
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35121 Padua, Italy.,INFN Padova, I-35131 Padua, Italy
| | - P Piseri
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, I-20133 Milan, Italy
| | - A Pullia
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, I-20133 Milan, Italy
| | - C Ransom
- Physik Institut der Universität Zürich, CH-8057 Zurich, Switzerland
| | - S Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, I-20133 Milan, Italy
| | - N Rumyantseva
- National Research Centre "Kurchatov Institute," Moscow 123182, Russia.,Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - C Sada
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35121 Padua, Italy.,INFN Padova, I-35131 Padua, Italy
| | - E Sala
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, I-67100 L'Aquila, Italy
| | - C Schmitt
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - B Schneider
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, D-01069 Dresden, Germany
| | - S Schönert
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - A-K Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - O Schulz
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | - M Schwarz
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | | | - O Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - E Shevchik
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - M Shirchenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - H Simgen
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - A Smolnikov
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany.,Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - L Stanco
- INFN Padova, I-35131 Padua, Italy
| | - D Stukov
- National Research Centre "Kurchatov Institute," Moscow 123182, Russia
| | - L Vanhoefer
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | - A A Vasenko
- Institute for Theoretical and Experimental Physics, Moscow 117259, Russia
| | - A Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - K von Sturm
- Dipartimento di Fisica e Astronomia dell'Università di Padova, I-35121 Padua, Italy.,INFN Padova, I-35131 Padua, Italy
| | - V Wagner
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - A Wegmann
- Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany
| | - T Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, D-01069 Dresden, Germany
| | - C Wiesinger
- Physik Department, Technische Universität München, D-85748 Munich, Germany
| | - M Wojcik
- Institute of Physics, Jagiellonian University, Cracow 40-348, Poland
| | - E Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - I Zhitnikov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - S V Zhukov
- National Research Centre "Kurchatov Institute," Moscow 123182, Russia
| | - D Zinatulina
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, D-72076 Tübingen, Germany
| | - A J Zsigmond
- Max-Planck-Institut für Physik, D-80805 Munich, Germany
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, D-01069 Dresden, Germany
| | - G Zuzel
- Institute of Physics, Jagiellonian University, Cracow 40-348, Poland
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19
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Hult M, Bonn SE, Andersson E, Spetz K, Lagerros YT. The PromMera study – an RCT evaluating the effect of a smartphone application to improve lifestyle after bariatric surgery. Surg Obes Relat Dis 2018. [DOI: 10.1016/j.soard.2018.09.367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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20
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Agostini M, Bakalyarov AM, Balata M, Barabanov I, Baudis L, Bauer C, Bellotti E, Belogurov S, Bettini A, Bezrukov L, Biernat J, Bode T, Borowicz D, Brudanin V, Brugnera R, Caldwell A, Cattadori C, Chernogorov A, Comellato T, D'Andrea V, Demidova EV, Di Marco N, Domula A, Doroshkevich E, Egorov V, Falkenstein R, Gangapshev A, Garfagnini A, Grabmayr P, Gurentsov V, Gusev K, Hakenmüller J, Hegai A, Heisel M, Hemmer S, Hiller R, Hofmann W, Hult M, Inzhechik LV, Janicskó Csáthy J, Jochum J, Junker M, Kazalov V, Kermaidic Y, Kihm T, Kirpichnikov IV, Kirsch A, Kish A, Klimenko A, Kneißl R, Knöpfle KT, Kochetov O, Kornoukhov VN, Kuzminov VV, Laubenstein M, Lazzaro A, Lindner M, Lippi I, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Majorovits B, Maneschg W, Miloradovic M, Mingazheva R, Misiaszek M, Moseev P, Nemchenok I, Panas K, Pandola L, Pelczar K, Pertoldi L, Pullia A, Ransom C, Riboldi S, Rumyantseva N, Sada C, Salamida F, Schmitt C, Schneider B, Schönert S, Schütz AK, Schulz O, Schwingenheuer B, Selivanenko O, Shevchik E, Shirchenko M, Simgen H, Smolnikov A, Stanco L, Vanhoefer L, Vasenko AA, Veresnikova A, von Sturm K, Wagner V, Wegmann A, Wester T, Wiesinger C, Wojcik M, Yanovich E, Zhitnikov I, Zhukov SV, Zinatulina D, Zschocke A, Zsigmond AJ, Zuber K, Zuzel G. Improved Limit on Neutrinoless Double-β Decay of ^{76}Ge from GERDA Phase II. Phys Rev Lett 2018; 120:132503. [PMID: 29694176 DOI: 10.1103/physrevlett.120.132503] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 01/23/2018] [Indexed: 06/08/2023]
Abstract
The GERDA experiment searches for the lepton-number-violating neutrinoless double-β decay of ^{76}Ge (^{76}Ge→^{76}Se+2e^{-}) operating bare Ge diodes with an enriched ^{76}Ge fraction in liquid argon. The exposure for broad-energy germanium type (BEGe) detectors is increased threefold with respect to our previous data release. The BEGe detectors feature an excellent background suppression from the analysis of the time profile of the detector signals. In the analysis window a background level of 1.0_{-0.4}^{+0.6}×10^{-3} counts/(keV kg yr) has been achieved; if normalized to the energy resolution this is the lowest ever achieved in any 0νββ experiment. No signal is observed and a new 90% C.L. lower limit for the half-life of 8.0×10^{25} yr is placed when combining with our previous data. The expected median sensitivity assuming no signal is 5.8×10^{25} yr.
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Affiliation(s)
- M Agostini
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - A M Bakalyarov
- National Research Centre "Kurchatov Institute", Moscow 123182, Russia
| | - M Balata
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - I Barabanov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - L Baudis
- Physik Institut der Universität Zürich, Zurich CH-8057, Switzerland
| | - C Bauer
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - E Bellotti
- Dipartimento di Fisica, Università Milano Bicocca, Milan I-20126, Italy
- INFN Milano Bicocca, Milan I-20126, Italy
| | - S Belogurov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", Moscow I-117259, Russia
| | - A Bettini
- Dipartimento di Fisica e Astronomia dell'Università di Padova, Padua I-35121, Italy
- INFN Padova, Padua I-35131, Italy
| | - L Bezrukov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - J Biernat
- Institute of Physics, Jagiellonian University, Cracow 31-007, Poland
| | - T Bode
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - D Borowicz
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - V Brudanin
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - R Brugnera
- Dipartimento di Fisica e Astronomia dell'Università di Padova, Padua I-35121, Italy
- INFN Padova, Padua I-35131, Italy
| | - A Caldwell
- Max-Planck-Institut für Physik, Munich D-80805, Germany
| | | | - A Chernogorov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", Moscow I-117259, Russia
| | - T Comellato
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - V D'Andrea
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - E V Demidova
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", Moscow I-117259, Russia
| | - N Di Marco
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - A Domula
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden D-01069, Germany
| | - E Doroshkevich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - V Egorov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - R Falkenstein
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - A Gangapshev
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - A Garfagnini
- Dipartimento di Fisica e Astronomia dell'Università di Padova, Padua I-35121, Italy
- INFN Padova, Padua I-35131, Italy
| | - P Grabmayr
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - V Gurentsov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - K Gusev
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- National Research Centre "Kurchatov Institute", Moscow 123182, Russia
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - J Hakenmüller
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - A Hegai
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - M Heisel
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - S Hemmer
- INFN Padova, Padua I-35131, Italy
| | - R Hiller
- Physik Institut der Universität Zürich, Zurich CH-8057, Switzerland
| | - W Hofmann
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - M Hult
- European Commission, JRC-Geel, Geel B-2440, Belgium
| | - L V Inzhechik
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - J Janicskó Csáthy
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - J Jochum
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - M Junker
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - V Kazalov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - Y Kermaidic
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - T Kihm
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - I V Kirpichnikov
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", Moscow I-117259, Russia
| | - A Kirsch
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - A Kish
- Physik Institut der Universität Zürich, Zurich CH-8057, Switzerland
| | - A Klimenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - R Kneißl
- Max-Planck-Institut für Physik, Munich D-80805, Germany
| | - K T Knöpfle
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - O Kochetov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - V N Kornoukhov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", Moscow I-117259, Russia
| | - V V Kuzminov
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - M Laubenstein
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - A Lazzaro
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - M Lindner
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - I Lippi
- INFN Padova, Padua I-35131, Italy
| | - A Lubashevskiy
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - B Lubsandorzhiev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - G Lutter
- European Commission, JRC-Geel, Geel B-2440, Belgium
| | - C Macolino
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - B Majorovits
- Max-Planck-Institut für Physik, Munich D-80805, Germany
| | - W Maneschg
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - M Miloradovic
- Physik Institut der Universität Zürich, Zurich CH-8057, Switzerland
| | - R Mingazheva
- Physik Institut der Universität Zürich, Zurich CH-8057, Switzerland
| | - M Misiaszek
- Institute of Physics, Jagiellonian University, Cracow 31-007, Poland
| | - P Moseev
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - I Nemchenok
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - K Panas
- Institute of Physics, Jagiellonian University, Cracow 31-007, Poland
| | - L Pandola
- INFN Laboratori Nazionali del Sud, Catania I-95123, Italy
| | - K Pelczar
- INFN Laboratori Nazionali del Gran Sasso and Gran Sasso Science Institute, Assergi I-67100, Italy
| | - L Pertoldi
- Dipartimento di Fisica e Astronomia dell'Università di Padova, Padua I-35121, Italy
- INFN Padova, Padua I-35131, Italy
| | - A Pullia
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, Milan I-20133, Italy
| | - C Ransom
- Physik Institut der Universität Zürich, Zurich CH-8057, Switzerland
| | - S Riboldi
- Dipartimento di Fisica, Università degli Studi di Milano e INFN Milano, Milan I-20133, Italy
| | - N Rumyantseva
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- National Research Centre "Kurchatov Institute", Moscow 123182, Russia
| | - C Sada
- Dipartimento di Fisica e Astronomia dell'Università di Padova, Padua I-35121, Italy
- INFN Padova, Padua I-35131, Italy
| | - F Salamida
- INFN Laboratori Nazionali del Gran Sasso and Università degli Studi dell'Aquila, L'Aquila, Aquila I-67100, Italy
| | - C Schmitt
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - B Schneider
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden D-01069, Germany
| | - S Schönert
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - A-K Schütz
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - O Schulz
- Max-Planck-Institut für Physik, Munich D-80805, Germany
| | | | - O Selivanenko
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - E Shevchik
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - M Shirchenko
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - H Simgen
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - A Smolnikov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - L Stanco
- INFN Padova, Padua I-35131, Italy
| | - L Vanhoefer
- Max-Planck-Institut für Physik, Munich D-80805, Germany
| | - A A Vasenko
- Institute for Theoretical and Experimental Physics, NRC "Kurchatov Institute", Moscow I-117259, Russia
| | - A Veresnikova
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - K von Sturm
- Dipartimento di Fisica e Astronomia dell'Università di Padova, Padua I-35121, Italy
- INFN Padova, Padua I-35131, Italy
| | - V Wagner
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - A Wegmann
- Max-Planck-Institut für Kernphysik, Heidelberg D-69029, Germany
| | - T Wester
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden D-01069, Germany
| | - C Wiesinger
- Physik Department and Excellence Cluster Universe, Technische Universität München, München D-85748, Germany
| | - M Wojcik
- Institute of Physics, Jagiellonian University, Cracow 31-007, Poland
| | - E Yanovich
- Institute for Nuclear Research of the Russian Academy of Sciences, Moscow 117312, Russia
| | - I Zhitnikov
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - S V Zhukov
- National Research Centre "Kurchatov Institute", Moscow 123182, Russia
| | - D Zinatulina
- Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - A Zschocke
- Physikalisches Institut, Eberhard Karls Universität Tübingen, Tübingen D-72076, Germany
| | - A J Zsigmond
- Max-Planck-Institut für Physik, Munich D-80805, Germany
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, Dresden D-01069, Germany
| | - G Zuzel
- Institute of Physics, Jagiellonian University, Cracow 31-007, Poland
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Marouli M, Lutter G, Pommé S, Van Ammel R, Hult M, Richter S, Eykens R, Peyrés V, García-Toraño E, Dryák P, Mazánová M, Carconi P. Measurement of absolute γ-ray emission probabilities in the decay of 235U. Appl Radiat Isot 2017; 132:72-78. [PMID: 29169063 DOI: 10.1016/j.apradiso.2017.10.049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 10/27/2017] [Accepted: 10/27/2017] [Indexed: 11/28/2022]
Abstract
Accurate measurements were performed of the photon emission probabilities following the α decay of 235U to 231Th. Sources of highly enriched 235U were characterised in terms of isotopic composition by mass spectrometry and their activities were standardised by means of alpha-particle counting at a low defined solid angle. The standardised sources were subsequently measured by high-resolution γ-ray spectrometry with calibrated high-purity germanium detectors to determine the photon emission probabilities. Four laboratories participated in this work and reported emission probabilities for 33 γ-ray lines. Most of them agree with previously published evaluated data. In addition, new values are proposed for γ-lines which have been measured only once in the past.
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Affiliation(s)
- M Marouli
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium
| | - G Lutter
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium
| | - S Pommé
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium.
| | - R Van Ammel
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium
| | - M Hult
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium
| | - S Richter
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium
| | - R Eykens
- European Commission, Joint Research Centre, JRC, Directorate for Nuclear Safety and Security, Retieseweg 111, B-2440 Geel, Belgium
| | - V Peyrés
- Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT, Avenida Complutense 40, 28040 Madrid, Spain
| | - E García-Toraño
- Laboratorio de Metrología de Radiaciones Ionizantes, CIEMAT, Avenida Complutense 40, 28040 Madrid, Spain
| | - P Dryák
- Český Metrologický Institut, CMI, Radiová 1, 102 00 Praha 10, Czech Republic
| | - M Mazánová
- Český Metrologický Institut, CMI, Radiová 1, 102 00 Praha 10, Czech Republic
| | - P Carconi
- ENEA, Instituto Nazionale di Metrologia delle Radiazioni Ionizzanti, C.R. Casaccia, P.O. Box 2400, I-00100 Rome A.D., Italy
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22
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Lutter G, Hult M, Marissens G, Stroh H, Tzika F. A gamma-ray spectrometry analysis software environment. Appl Radiat Isot 2017; 134:200-204. [PMID: 28690097 DOI: 10.1016/j.apradiso.2017.06.045] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2017] [Revised: 06/28/2017] [Accepted: 06/29/2017] [Indexed: 10/19/2022]
Abstract
At the JRC-Geel's RadioNuclide Metrology sector, a Monte Carlo code based on EGSnrc, and a general purpose calculation sheet implemented in Microsoft Excel®, have been developed to make the quantitative gamma-ray spectrometry analysis of samples simpler and more robust. The further aim is that the software can be used by non-experts in gamma-ray spectrometry e.g. external researchers using JRC-Geel's facilities through the EUFRAT transnational access scheme. This paper presents the developed Monte Carlo software and the functionality included in the calculation sheet.
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Affiliation(s)
- G Lutter
- European Commission, Joint Research Centre (JRC-Geel), Retieseweg 111, B-2440 Geel, Belgium.
| | - M Hult
- European Commission, Joint Research Centre (JRC-Geel), Retieseweg 111, B-2440 Geel, Belgium
| | - G Marissens
- European Commission, Joint Research Centre (JRC-Geel), Retieseweg 111, B-2440 Geel, Belgium
| | - H Stroh
- European Commission, Joint Research Centre (JRC-Geel), Retieseweg 111, B-2440 Geel, Belgium
| | - F Tzika
- European Commission, Joint Research Centre (JRC-Geel), Retieseweg 111, B-2440 Geel, Belgium
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23
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Jovančević N, Daraban L, Stroh H, Oberstedt S, Hult M, Bonaldi C, Geerts W, Hambsch FJ, Lutter G, Marissens G, Vidali M. The cross section functions for neutron induced reactions with Rhenium in the energy range 13.0–19.5 MeV. EPJ Web Conf 2017. [DOI: 10.1051/epjconf/201714611025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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24
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Pommé S, Stroh H, Paepen J, Van Ammel R, Marouli M, Altzitzoglou T, Hult M, Kossert K, Nähle O, Schrader H, Juget F, Bailat C, Nedjadi Y, Bochud F, Buchillier T, Michotte C, Courte S, van Rooy M, van Staden M, Lubbe J, Simpson B, Fazio A, De Felice P, Jackson T, Van Wyngaardt W, Reinhard M, Golya J, Bourke S, Roy T, Galea R, Keightley J, Ferreira K, Collins S, Ceccatelli A, Unterweger M, Fitzgerald R, Bergeron D, Pibida L, Verheyen L, Bruggeman M, Vodenik B, Korun M, Chisté V, Amiot MN. Evidence against solar influence on nuclear decay constants. Phys Lett B 2016; 761:281-286. [PMID: 28057978 PMCID: PMC5207040 DOI: 10.1016/j.physletb.2016.08.038] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The hypothesis that proximity to the Sun causes variation of decay constants at permille level has been tested and disproved. Repeated activity measurements of mono-radionuclide sources were performed over periods from 200 days up to four decades at 14 laboratories across the globe. Residuals from the exponential nuclear decay curves were inspected for annual oscillations. Systematic deviations from a purely exponential decay curve differ from one data set to another and are attributable to instabilities in the instrumentation and measurement conditions. The most stable activity measurements of alpha, beta-minus, electron capture, and beta-plus decaying sources set an upper limit of 0.0006% to 0.008% to the amplitude of annual oscillations in the decay rate. Oscillations in phase with Earth's orbital distance to the Sun could not be observed within a 10-6 to 10-5 range of precision. There are also no apparent modulations over periods of weeks or months. Consequently, there is no indication of a natural impediment against sub-permille accuracy in half-life determinations, renormalisation of activity to a distant reference date, application of nuclear dating for archaeology, geo- and cosmochronology, nor in establishing the SI unit becquerel and seeking international equivalence of activity standards.
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Affiliation(s)
- S. Pommé
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - H. Stroh
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - J. Paepen
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - R. Van Ammel
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - M. Marouli
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - T. Altzitzoglou
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - M. Hult
- European Commission, Joint Research Centre (JRC), Retieseweg 111, B-2440Geel, Belgium
| | - K. Kossert
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
| | - O. Nähle
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
| | - H. Schrader
- Physikalisch-Technische Bundesanstalt (PTB), Bundesallee 100, 38116 Braunschweig, Germany
| | - F. Juget
- Institut de Radiophysique, Lausanne (IRA), Switzerland
| | - C. Bailat
- Institut de Radiophysique, Lausanne (IRA), Switzerland
| | - Y. Nedjadi
- Institut de Radiophysique, Lausanne (IRA), Switzerland
| | - F. Bochud
- Institut de Radiophysique, Lausanne (IRA), Switzerland
| | - T. Buchillier
- Institut de Radiophysique, Lausanne (IRA), Switzerland
| | - C. Michotte
- Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, 92310 Sèvres, France
| | - S. Courte
- Bureau International des Poids et Mesures (BIPM), Pavillon de Breteuil, 92310 Sèvres, France
| | - M.W. van Rooy
- Radioactivity Standards Laboratory (NMISA), 15 Lower Hope Road, Rosebank 7700, Cape Town, South Africa
| | - M.J. van Staden
- Radioactivity Standards Laboratory (NMISA), 15 Lower Hope Road, Rosebank 7700, Cape Town, South Africa
| | - J. Lubbe
- Radioactivity Standards Laboratory (NMISA), 15 Lower Hope Road, Rosebank 7700, Cape Town, South Africa
| | - B.R.S. Simpson
- Radioactivity Standards Laboratory (NMISA), 15 Lower Hope Road, Rosebank 7700, Cape Town, South Africa
| | - A. Fazio
- National Institute of Ionizing Radiation Metrology (ENEA), Casaccia Research Centre, Via Anguillarese, 301—S.M. Galeria I-00060 Roma, C.P. 2400, I-00100 Roma A.D., Italy
| | - P. De Felice
- National Institute of Ionizing Radiation Metrology (ENEA), Casaccia Research Centre, Via Anguillarese, 301—S.M. Galeria I-00060 Roma, C.P. 2400, I-00100 Roma A.D., Italy
| | - T.W. Jackson
- Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee, NSW 2232, Australia
| | - W.M. Van Wyngaardt
- Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee, NSW 2232, Australia
| | - M.I. Reinhard
- Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee, NSW 2232, Australia
| | - J. Golya
- Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee, NSW 2232, Australia
| | - S. Bourke
- Australian Nuclear Science and Technology Organisation (ANSTO), Locked Bag 2001, Kirrawee, NSW 2232, Australia
| | - T. Roy
- National Research Council of Canada (NRC), 1200 Montreal Road, Ottawa, ON, K1A0R6, Canada
| | - R. Galea
- National Research Council of Canada (NRC), 1200 Montreal Road, Ottawa, ON, K1A0R6, Canada
| | - J.D. Keightley
- National Physical Laboratory (NPL), Hampton Road, Teddington, Middlesex TW11 OLW, UK
| | - K.M. Ferreira
- National Physical Laboratory (NPL), Hampton Road, Teddington, Middlesex TW11 OLW, UK
| | - S.M. Collins
- National Physical Laboratory (NPL), Hampton Road, Teddington, Middlesex TW11 OLW, UK
| | - A. Ceccatelli
- Terrestrial Environment Laboratory, IAEA Environment Laboratories, Department of Nuclear Sciences and Applications, International Atomic Energy Agency (IAEA), Vienna International Centre, PO Box 100, 1400 Vienna, Austria
| | - M. Unterweger
- Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Dr., Gaithersburg, MD 20899-8462, USA
| | - R. Fitzgerald
- Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Dr., Gaithersburg, MD 20899-8462, USA
| | - D.E. Bergeron
- Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Dr., Gaithersburg, MD 20899-8462, USA
| | - L. Pibida
- Physical Measurement Laboratory, National Institute of Standards and Technology (NIST), 100 Bureau Dr., Gaithersburg, MD 20899-8462, USA
| | - L. Verheyen
- Belgian Nuclear Research Centre (SCK·CEN), Boeretang 200, B-2400 Mol, Belgium
| | - M. Bruggeman
- Belgian Nuclear Research Centre (SCK·CEN), Boeretang 200, B-2400 Mol, Belgium
| | - B. Vodenik
- Jožef Stefan Institute (JSI), Jamova 39, 1000 Ljubljana, Slovenia
| | - M. Korun
- Jožef Stefan Institute (JSI), Jamova 39, 1000 Ljubljana, Slovenia
| | - V. Chisté
- CEA, LIST, Laboratoire National Henri Becquerel (LNHB), Bât. 602 PC 111, CEA-Saclay 91191 Gif-sur-Yvette cedex, France
| | - M.-N. Amiot
- CEA, LIST, Laboratoire National Henri Becquerel (LNHB), Bât. 602 PC 111, CEA-Saclay 91191 Gif-sur-Yvette cedex, France
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25
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Aoyama M, Hult M, Hamajima Y, Lutter G, Marissens G, Stroh H, Tzika F. Tracing radioactivity from Fukushima in the Northern Pacific Ocean. Appl Radiat Isot 2016; 109:435-440. [DOI: 10.1016/j.apradiso.2015.11.103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Accepted: 11/25/2015] [Indexed: 11/27/2022]
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26
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Tzika F, Hult M, Stroh H, Marissens G, Arnold D, Burda O, Kovář P, Suran J, Listkowska A, Tyminski Z. A new large-volume metal reference standard for radioactive waste management. Radiat Prot Dosimetry 2016; 168:293-299. [PMID: 25977349 PMCID: PMC4752698 DOI: 10.1093/rpd/ncv309] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/20/2015] [Accepted: 03/27/2015] [Indexed: 06/04/2023]
Abstract
A new large-volume metal reference standard has been developed. The intended use is for calibration of free-release radioactivity measurement systems and is made up of cast iron tubes placed inside a box of the size of a Euro-pallet (80 × 120 cm). The tubes contain certified activity concentrations of (60)Co (0.290 ± 0.006 Bq g(-1)) and (110m)Ag (3.05 ± 0.09 Bq g(-1)) (reference date: 30 September 2013). They were produced using centrifugal casting from a smelt into which (60)Co was first added and then one piece of neutron irradiated silver wire was progressively diluted. The iron castings were machined to the desirable dimensions. The final material consists of 12 iron tubes of 20 cm outer diameter, 17.6 cm inner diameter, 40 cm length/height and 245.9 kg total mass. This paper describes the reference standard and the process of determining the reference activity values.
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Affiliation(s)
- F Tzika
- EC-JRC-IRMM, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, Geel 2440, Belgium Present address: EC-JRC-ITU, Institute for Transuranium Elements, PO Box 2340, Karlsruhe 76125, Germany
| | - M Hult
- EC-JRC-IRMM, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, Geel 2440, Belgium
| | - H Stroh
- EC-JRC-IRMM, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, Geel 2440, Belgium
| | - G Marissens
- EC-JRC-IRMM, European Commission, Joint Research Centre, Institute for Reference Materials and Measurements, Retieseweg 111, Geel 2440, Belgium
| | - D Arnold
- PTB, Physikalisch-Technische Bundesanstalt, Bundesallee 100, Braunschweig 38116, Germany
| | - O Burda
- PTB, Physikalisch-Technische Bundesanstalt, Bundesallee 100, Braunschweig 38116, Germany
| | - P Kovář
- CMI, Czech Metrology Institute, Radiová 1a, Praha 10 102 00, Czech Republic
| | - J Suran
- CMI, Czech Metrology Institute, Radiová 1a, Praha 10 102 00, Czech Republic
| | - A Listkowska
- NCBJ, Narodowe Centrum Badań Jądrowych RC POLATOM, ul. Andrzeja Sołtana 7, Otwock-Świerk 05-400, Poland
| | - Z Tyminski
- NCBJ, Narodowe Centrum Badań Jądrowych RC POLATOM, ul. Andrzeja Sołtana 7, Otwock-Świerk 05-400, Poland
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27
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Pham M, van Beek P, Carvalho F, Chamizo E, Degering D, Engeler C, Gascó C, Gurriaran R, Hanley O, Harms A, Herrmann J, Hult M, Ikeuchi Y, Ilchmann C, Kanisch G, Kis-Benedek G, Kloster M, Laubenstein M, Llaurado M, Mas J, Nakano M, Nielsen S, Osvath I, Povinec P, Rieth U, Schikowski J, Smedley P, Suplinska M, Sýkora I, Tarjan S, Varga B, Vasileva E, Zalewska T, Zhou W. Certified reference materials for radionuclides in Bikini Atoll sediment (IAEA-410) and Pacific Ocean sediment (IAEA-412). Appl Radiat Isot 2016; 109:101-104. [DOI: 10.1016/j.apradiso.2015.11.041] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2015] [Accepted: 11/19/2015] [Indexed: 10/22/2022]
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28
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Lindberg C, Anderson B, Engvall M, Hult M, Oldfors A. Search for Pompe disease among patients with undetermined myopathies. Acta Neurol Scand 2016; 133:131-135. [PMID: 26190396 DOI: 10.1111/ane.12460] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Pompe disease is a rare treatable glycogen storage disease with in adults - a limb-girdle muscle weakness. Muscle biopsy may fail to show the typical vacuolar myopathy. We asked if we had un-diagnosed patients with Pompe disease in western Sweden. MATERIAL AND METHODS We searched the muscle biopsy registry during the time period 1986 until 2006 including 3665 biopsies and included patients at our Neuromuscular Center with unspecified myopathy or limb-girdle muscular dystrophy. The dry blood spot test was used to identify patients with Pompe disease. RESULTS A total of 82 patients (46 from the biopsy register and 36 from our center) were seen and dry blood spot test was obtained. No patient with Pompe disease was found. The dry blood spot test was low in three cases (11, 16, and 18% of normal) but a second blood sample showed a normal result based on GAA enzyme activity in lymphocytes in all three patients. In one patient with low normal result of the analysis in lymphocytes a genetic test showed no pathogenic mutations. Further investigation gave a definite diagnose of another myopathy in 12 patients. CONCLUSIONS The prevalence of Pompe disease in western Sweden (3 in 1.27 million or 0.24 per 100.000 inhabitants) is lower than in the Netherlands and New York. Re-evaluation of patients with myopathies but without definite diagnosis is rewarding since 12 of 82 patients in our study had a definite molecular diagnosis after workup.
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Affiliation(s)
- C. Lindberg
- Department of Clinical Neuroscience and Physiology; Section of Neurology; The Sahlgrenska Academy at University of Gothenburg; Sahlgrenska University Hospital; Gothenburg Sweden
| | - B. Anderson
- Department of Clinical Neuroscience and Physiology; Section of Neurology; The Sahlgrenska Academy at University of Gothenburg; Sahlgrenska University Hospital; Gothenburg Sweden
| | - M. Engvall
- Centre for Inherited Metabolic Diseases; Karolinska University Hospital Stockholm; Stockholm Sweden
- Department of molecular medicine and surgery; Karolinska Institute; Stockholm Sweden
| | - M. Hult
- Centre for Inherited Metabolic Diseases; Karolinska University Hospital Stockholm; Stockholm Sweden
| | - A. Oldfors
- Department of Pathology; Institute of Biomedicine; The Sahlgrenska Academy at University of Gothenburg; Gothenburg Sweden
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Svensson M, Hult M, van der Mark M, Grotta A, Jonasson J, von Hausswolff-Juhlin Y, Rössner S, Trolle Lagerros Y. The change in eating behaviors in a Web-based weight loss program: a longitudinal analysis of study completers. J Med Internet Res 2014; 16:e234. [PMID: 25367316 PMCID: PMC4259913 DOI: 10.2196/jmir.3131] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 04/07/2014] [Accepted: 07/22/2014] [Indexed: 01/01/2023] Open
Abstract
Background Eating behaviors are essential components in weight loss programs, but limited research has explored eating behaviors in Web-based weight loss programs. Objectives The aim was to evaluate an interactive Web-based weight loss program on eating behaviors using the 18-item Three-Factor Eating Questionnaire Revised (TFEQ-R18) which measures uncontrolled eating, emotional eating, and cognitive restrained eating. Our Web-based weight loss program is comprised of information about healthy lifestyle choices, weekly chats with experts, social networking features, databases for recipe searches, and features allowing members to self-report and track their weight, physical activity, and dietary intake on the website. Methods On registering for the weight loss program, 23,333 members agreed to take part in the research study. The participants were then asked to complete the TFEQ-R18 questionnaire at baseline and after 3 and 6 months of participation. All data collection was conducted online, with no face-to-face contact. To study changes in TFEQ-R18 eating behaviors we restricted our study to those members who completed all 3 TFEQ-R18 questionnaires. These participants were defined as “completers” and the remaining as “noncompleters.” The relationships between sex, change in eating behaviors, and total weight loss were studied using repeated measures ANOVA and Pearson correlation coefficient. Results In total, 22,800 individuals participated (females: 19,065/22,800, 83.62%; mean age 39.6, SD 11.4 years; BMI 29.0 kg/m2; males: 3735/22,800, 16.38%; mean age 43.2, SD 11.7 years; BMI 30.8 kg/m2). Noncompleters (n=22,180) were younger and reported a lower score of uncontrolled eating and a higher score of cognitive restrained eating. Over time, completers (n=620) decreased their uncontrolled eating score (from 56.3 to 32.0; P<.001) and increased their cognitive restrained eating (from 50.6 to 62.9; P<.001). Males decreased their emotional eating (from 57.2 to 35.9; P<.001), but no significant change was found among females. The baseline cognitive restrained eating score was significantly and positively associated with weight loss for completers in both men (P=.02) and women (P=.002). Conclusions To our knowledge, this is the largest TFEQ sample that has been documented. This Web-based weight loss intervention suggests that eating behaviors (cognitive restrained eating, uncontrolled eating, and emotional eating) measured by TFEQ-R18 were significantly changed during 6 months of participation. Our findings indicate differences in eating behaviors with respect to sex, but should be interpreted with caution because attrition was high.
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Affiliation(s)
- Madeleine Svensson
- Halmstad University, Deparment of Health and Social Sciences, Halmstad, Sweden.
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Andreotti E, Hult M, Marissens G, Lutter G, Garfagnini A, Hemmer S, von Sturm K. Determination of dead-layer variation in HPGe detectors. Appl Radiat Isot 2014; 87:331-5. [PMID: 24331853 DOI: 10.1016/j.apradiso.2013.11.046] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 11/18/2013] [Indexed: 10/26/2022]
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31
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Maringer F, Šuráň J, Kovář P, Chauvenet B, Peyres V, García-Toraño E, Cozzella M, De Felice P, Vodenik B, Hult M, Rosengård U, Merimaa M, Szücs L, Jeffery C, Dean J, Tymiński Z, Arnold D, Hinca R, Mirescu G. Radioactive waste management: Review on clearance levels and acceptance criteria legislation, requirements and standards. Appl Radiat Isot 2013; 81:255-60. [DOI: 10.1016/j.apradiso.2013.03.046] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2012] [Accepted: 03/11/2013] [Indexed: 10/27/2022]
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32
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Bonheure G, Van Wassenhove G, Hult M, González de Orduña R, Strivay D, Vermaercke P, Delvigne T, Chene G, Delhalle R, Huber A, Schweer B, Esser G, Biel W, Neubauer O. Investigation of advanced materials for fusion alpha particle diagnostics. Fusion Engineering and Design 2013. [DOI: 10.1016/j.fusengdes.2013.01.029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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33
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Agostini M, Allardt M, Andreotti E, Bakalyarov AM, Balata M, Barabanov I, Barnabé Heider M, Barros N, Baudis L, Bauer C, Becerici-Schmidt N, Bellotti E, Belogurov S, Belyaev ST, Benato G, Bettini A, Bezrukov L, Bode T, Brudanin V, Brugnera R, Budjáš D, Caldwell A, Cattadori C, Chernogorov A, Cossavella F, Demidova EV, Domula A, Egorov V, Falkenstein R, Ferella A, Freund K, Frodyma N, Gangapshev A, Garfagnini A, Gotti C, Grabmayr P, Gurentsov V, Gusev K, Guthikonda KK, Hampel W, Hegai A, Heisel M, Hemmer S, Heusser G, Hofmann W, Hult M, Inzhechik LV, Ioannucci L, Janicskó Csáthy J, Jochum J, Junker M, Kihm T, Kirpichnikov IV, Kirsch A, Klimenko A, Knöpfle KT, Kochetov O, Kornoukhov VN, Kuzminov VV, Laubenstein M, Lazzaro A, Lebedev VI, Lehnert B, Liao HY, Lindner M, Lippi I, Liu X, Lubashevskiy A, Lubsandorzhiev B, Lutter G, Macolino C, Machado AA, Majorovits B, Maneschg W, Misiaszek M, Nemchenok I, Nisi S, O'Shaughnessy C, Pandola L, Pelczar K, Pessina G, Pullia A, Riboldi S, Rumyantseva N, Sada C, Salathe M, Schmitt C, Schreiner J, Schulz O, Schwingenheuer B, Schönert S, Shevchik E, Shirchenko M, Simgen H, Smolnikov A, Stanco L, Strecker H, Tarka M, Ur CA, Vasenko AA, Volynets O, von Sturm K, Wagner V, Walter M, Wegmann A, Wester T, Wojcik M, Yanovich E, Zavarise P, Zhitnikov I, Zhukov SV, Zinatulina D, Zuber K, Zuzel G. Results on neutrinoless double-β decay of 76Ge from phase I of the GERDA experiment. Phys Rev Lett 2013; 111:122503. [PMID: 24093254 DOI: 10.1103/physrevlett.111.122503] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Indexed: 06/02/2023]
Abstract
Neutrinoless double beta decay is a process that violates lepton number conservation. It is predicted to occur in extensions of the standard model of particle physics. This Letter reports the results from phase I of the Germanium Detector Array (GERDA) experiment at the Gran Sasso Laboratory (Italy) searching for neutrinoless double beta decay of the isotope (76)Ge. Data considered in the present analysis have been collected between November 2011 and May 2013 with a total exposure of 21.6 kg yr. A blind analysis is performed. The background index is about 1 × 10(-2) counts/(keV kg yr) after pulse shape discrimination. No signal is observed and a lower limit is derived for the half-life of neutrinoless double beta decay of (76)Ge, T(1/2)(0ν) >2.1 × 10(25) yr (90% C.L.). The combination with the results from the previous experiments with (76)Ge yields T(1/2)(0ν)>3.0 × 10(25) yr (90% C.L.).
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Affiliation(s)
- M Agostini
- Physik Department and Excellence Cluster Universe, Technische Universität München, Germany
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Bonheure G, Mlynar J, Van Wassenhove G, Hult M, González de Orduña R, Lutter G, Vermaercke P, Huber A, Schweer B, Esser G, Biel W. First fusion proton measurements in TEXTOR plasmas using activation technique. Rev Sci Instrum 2012; 83:10D318. [PMID: 23126844 DOI: 10.1063/1.4739228] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
MeV particle loss measurements from fusion plasmas, in particular alpha particles, remain difficult in large fusion devices and further R&D is needed for ITER. This paper describes the first attempt to measure 3 MeV escaping fusion protons emitted from TEXTOR tokamak plasmas using activation technique. This technique was successfully demonstrated, initially, in 2006 on the JET tokamak. An ion camera equipped with a collimator and several types of activation detectors was installed inside the TEXTOR vacuum vessel to perform these measurements. After irradiation, the detectors were analyzed using ultra low level gamma-ray spectrometry at the HADES underground laboratory. 3 MeV escaping fusion protons were detected in larger number -~6 times more--compared to earlier measurements using this technique on JET. Another major progress was the reduction of the cooling time by a factor of 50, which made possible to detect radionuclides with half-life of less than 90 min.
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Affiliation(s)
- G Bonheure
- ERM-KMS, Trilateral Euregio Cluster, B-1000 Brussels, Belgium.
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Hult M, Andreotti E, González de Orduña R, Pommé S, Yeltepe E. Quantification of uranium-238 in environmental samples using gamma-ray spectrometry. EPJ Web of Conferences 2012. [DOI: 10.1051/epjconf/20122407005] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Hult M, Marissens G, Sahin N, Hoshi M, Hasai H, Shizuma K, Tanaka K, Endo S. Distribution of 60Co in steel samples from Hiroshima. Appl Radiat Isot 2012; 70:1974-6. [PMID: 22406217 DOI: 10.1016/j.apradiso.2012.02.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2011] [Accepted: 02/19/2012] [Indexed: 11/18/2022]
Abstract
This paper describes ultra low-level gamma-ray spectrometry measurements of the (60)Co activity distribution inside one 52 mm and one 41 mm thick steel sample. The samples had been exposed to the Hiroshima atomic bomb and were from the Aioi bridge and the Yokogawa bridge. Both samples were measured in a recent study aiming to back up model calculation of Hiroshima dosimetry. The (60)Co activity distributions found in this study support the assumptions made in the previous study.
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Affiliation(s)
- M Hult
- European Commission, Joint Research Centre, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium.
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Bonheure G, Hult M, González de Orduña R, Vermaercke P, Murari A, Popovichev S, Mlynar J. Fusion alpha loss diagnostic for ITER using activation technique. Fusion Engineering and Design 2011. [DOI: 10.1016/j.fusengdes.2011.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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38
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Bonheure G, Hult M, González de Orduña R, Arnold D, Dombrowski H, Laubenstein M, Wieslander E, Vermaercke P, Murari A, Popovichev S, Mlynar J. Charged fusion product loss measurements using nuclear activation. Rev Sci Instrum 2010; 81:10D331. [PMID: 21058458 DOI: 10.1063/1.3502321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
In ITER, α particle loss measurements will be required in order to understand the alpha particle physics. Techniques capable of operating in a fusion reactor environment need further development. Recent experimental studies on JET demonstrated the potential of nuclear activation to measure the flux of escaping MeV ions. New results from MeV ion induced activation of metallic, ceramic, and crystal samples placed near the plasma edge are reported. Activation products were measured as function of orientation with respect to the magnetic field as well as function of the distance to the plasma. Sample activity was measured using ultralow-level gamma-ray spectrometry. Distribution of 14.68 MeV fusion proton induced activation products is strongly anisotropic in agreement with simulations and falls off sharply with increasing distance to the plasma. Prospects for using the technique in ITER are discussed.
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Affiliation(s)
- G Bonheure
- Laboratory for Plasma Physics, Association Euratom-Belgian State, Royal Military Academy, Avenue de la Renaissance, 30 Kunstherlevinglaan, B-1000 Brussels, Belgium.
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39
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González de Orduña R, Hult M, Bonheure G, Arnold D, Dombrowski H, Laubenstein M, Wieslander J, Vidmar T, Vermaercke P. Angular distribution of proton leakage from a fusion plasma using ultra low-level γ-ray spectrometry. Appl Radiat Isot 2010; 68:1226-30. [DOI: 10.1016/j.apradiso.2009.11.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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40
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Vasile M, Benedik L, Altzitzoglou T, Spasova Y, Wätjen U, González de Orduña R, Hult M, Beyermann M, Mihalcea I. 226Ra and 228Ra determination in mineral waters—Comparison of methods. Appl Radiat Isot 2010; 68:1236-9. [DOI: 10.1016/j.apradiso.2009.11.018] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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41
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Vidmar T, Çelik N, Cornejo Díaz N, Dlabac A, Ewa I, Carrazana González J, Hult M, Jovanović S, Lépy MC, Mihaljević N, Sima O, Tzika F, Jurado Vargas M, Vasilopoulou T, Vidmar G. Testing efficiency transfer codes for equivalence. Appl Radiat Isot 2010; 68:355-9. [DOI: 10.1016/j.apradiso.2009.10.012] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Revised: 09/28/2009] [Accepted: 10/12/2009] [Indexed: 10/20/2022]
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Pham MK, Betti M, Povinec PP, Benmansour M, Bojanowski R, Bouisset P, Calvo EC, Ham GJ, Holm E, Hult M, Ilchmann C, Kloster M, Kanisch G, Köhler M, La Rosa J, Legarda F, Llauradó M, Nourredine A, Oh JS, Pellicciari M, Rieth U, Rodriguez y Baena AM, Sanchez-Cabeza JA, Satake H, Schikowski J, Takeishi M, Thébault H, Varga Z. A new reference material for radionuclides in the mussel sample from the Mediterranean Sea (IAEA-437). J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-009-0426-7] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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43
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Wieslander JSE, Suhonen J, Eronen T, Hult M, Elomaa VV, Jokinen A, Marissens G, Misiaszek M, Mustonen MT, Rahaman S, Weber C, Aystö J. Smallest known Q value of any nuclear decay: the rare beta;{-} decay of ;{115}In(9/2;{+}) --> ;{115}Sn(3/2;{+}). Phys Rev Lett 2009; 103:122501. [PMID: 19792426 DOI: 10.1103/physrevlett.103.122501] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2009] [Indexed: 05/28/2023]
Abstract
The ground-state-to-ground-state Q_{beta;{-}} value of ;{115}In was determined to 497.68(17) keV using a high-precision Penning trap facility at the University of Jyväskylä, Finland. From this, a Q_{beta;{-}} value of 0.35(17) keV was obtained for the rare beta;{-} decay to the first excited state of ;{115}Sn at 497.334(22) keV. The partial half-life was determined to 4.1(6) x 10;{20} yr using ultra low-background gamma-ray spectrometry in an underground laboratory. Theoretical modeling of this 2nd-forbidden unique beta;{-} transition was also undertaken and resulted in Q_{beta;{-}} = 57_{-12};{+19} eV using the measured half-life. The discrepancy between theory and experiment could be attributed to atomic effects enhanced by the low Q value. The present study implies that this transition has the lowest Q value of any known nuclear beta decay.
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Affiliation(s)
- J S E Wieslander
- EC-JRC-IRMM, Institute for Reference Materials and Measurements, B-2440 Geel, Belgium
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Köhler M, Degering D, Laubenstein M, Quirin P, Lampert MO, Hult M, Arnold D, Neumaier S, Reyss JL. A new low-level γ-ray spectrometry system for environmental radioactivity at the underground laboratory Felsenkeller. Appl Radiat Isot 2009; 67:736-40. [DOI: 10.1016/j.apradiso.2009.01.027] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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45
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Budjáš D, Gangapshev A, Gasparro J, Hampel W, Heisel M, Heusser G, Hult M, Klimenko A, Kuzminov V, Laubenstein M, Maneschg W, Simgen H, Smolnikov A, Tomei C, Vasiliev S. Gamma-ray spectrometry of ultra low levels of radioactivity within the material screening program for the GERDA experiment. Appl Radiat Isot 2009; 67:755-8. [PMID: 19243966 DOI: 10.1016/j.apradiso.2009.01.019] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hult M, Gasparro J, Lindahl P, Marissens G, Fessler A, Johnston PN. On the use of mercury as a means of locating background sources in ultra low-background HPGe-detector systems. Appl Radiat Isot 2008; 66:829-34. [DOI: 10.1016/j.apradiso.2008.02.021] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Abstract
International measurement comparisons are organised regularly for EU laboratories involved in monitoring radioactivity, with emphasis on meeting routine measurement conditions. Using the recent comparison of 137Cs in air filters as an example, the whole cycle is described: establishment of traceable reference values, spiking of individual filters for the comparison and their quality assurance, treatment and measurement of filters in the participating laboratories and evaluation of comparison results. The treatment of an individual result, deviating widely from the reference value, is discussed. Monte-Carlo simulations allow to estimate the maximum errors possibly made due to a non-suitable measurement geometry.
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Affiliation(s)
- U Wätjen
- EC-JRC, Institute for Reference Materials and Measurements (IRMM), Retieseweg 111, B-2440 Geel, Belgium.
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Laubenstein M, Hult M, Gasparro J, Arnold D, Neumaier S, Heusser G, Köhler M, Povinec P, Reyss JL, Schwaiger M, Theodórsson P. Underground measurements of radioactivity. Appl Radiat Isot 2004; 61:167-72. [PMID: 15177339 DOI: 10.1016/j.apradiso.2004.03.039] [Citation(s) in RCA: 141] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The exceptional sensitivity of gamma-ray spectrometry in underground laboratories has increasing application because of the important science and technology that it allows to be studied. Early work focused on rare fundamental phenomena, e.g. double beta decay, but a growing number of underground measurements is being performed in fields such as environmental monitoring, surveillance of nuclear activities, benchmarking of other physical techniques and materials selection for equipment which require materials with extremely low levels of radioactivity. This report describes the state of the art in underground gamma-ray spectrometry. Backgrounds of HPGe-detectors at various underground laboratories are presented and compared. Improved techniques and detectors are described and needs of deep underground facilities for higher sensitivity measurements are discussed.
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Affiliation(s)
- M Laubenstein
- Laboratori Nazionali del Gran Sasso, INFN, S.S. 17/bis km 18+910, Assergi(AQ), I-67010 Italy.
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Abstract
Analysis of 60Co traces in the matrix steel has recently gained in importance. This paper deals with the low-level gamma-ray spectrometry measurements that were part of a recent German survey aiming at determining the present levels of artificial radionuclides in commercial steel. Specific 60Co activities in the order of 10(-5) Bq g(-1) were measured. To show equivalence in these measurements, a comparison exercise of European underground laboratories has been carried out, additionally.
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Affiliation(s)
- M Köhler
- Verein für Kernverfahrenstechnik und Analytik Rossendorf, PF 510119, D-01314 Dresden, Germany.
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Hult M, Elleby B, Shafqat N, Svensson S, Rane A, Jörnvall H, Abrahmsen L, Oppermann U. Human and rodent type 1 11beta-hydroxysteroid dehydrogenases are 7beta-hydroxycholesterol dehydrogenases involved in oxysterol metabolism. Cell Mol Life Sci 2004; 61:992-9. [PMID: 15095019 DOI: 10.1007/s00018-003-3476-y] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Interconversion between cortisone and the glucocorticoid receptor ligand cortisol is carried out by 11beta-hydroxysteroid dehydrogenase (11beta-HSD)isozymes and constitutes a medically important example of pre-receptor control of steroid hormones. The enzyme 11beta-HSD type 1 (11beta-HSD1) catalyzes the conversion of cortisone to its active receptor-binding derivative cortisol, whereas 11beta-HSD type 2 performs the reverse reaction. Specific inhibitors against the type 1 enzyme lower intracellular levels of glucocorticoid hormone, with an important clinical application in insulin resistance and other metabolic disorders. We report here on the in vitro oxysterol-metabolizing properties of human and rodent 11beta-HSD1. The enzyme, either as full-length, membrane-attached, or as a transmembrane domain-deleted, soluble form, mediates exclusively conversion between 7-ketocholesterol and 7beta-hydroxycholesterol with similar k(cat) values as observed with glucocorticoid hormones. Thus, human, rat, and mouse 11beta-HSD1 have dual enzyme activities like the recently described 7alpha-hydroxysteroid dehydrogenase/11beta-hydroxysteroid dehydrogenase from hamster liver, but differ fundamentally from the latter in that 7beta-OH rather than 7alpha-OH dehydrogenase constitutes the second activity. These results demonstrate an enzymatic origin of species differences in 7-oxysterol metabolism, establish the origin of endogenous 7beta-OH cholesterol in humans, and point to a possible involvement of 11beta-HSD1 in atherosclerosis.
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Affiliation(s)
- M Hult
- Medical Biochemistry and Biophysics, Karolinska Institutet, 17177 Stockholm, Sweden
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