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Jermann N, Krusche B, Metag V, Afzal F, Badea M, Beck R, Bielefeldt P, Bieling J, Biroth M, Blanke E, Borisov N, Bornstein M, Brinkmann KT, Ciupka S, Crede V, Dolzhikov A, Drexler P, Dutz H, Elsner D, Fedorov A, Frommberger F, Gardner S, Ghosal D, Goertz S, Gorodnov I, Grüner M, Hammann C, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jude TC, Kalischewski F, Ketzer B, Klassen P, Klein F, Klempt E, Knaust J, Kolanus N, Kreit J, Krönert P, Lang M, Lazarev AB, Livingston K, Lutterer S, Mahlberg P, Meier C, Meyer W, Mitlasoczki B, Müllers J, Nanova M, Neganov A, Nikonov K, Noël JF, Ostrick M, Ottnad J, Otto B, Penman G, Poller T, Proft D, Reicherz G, Reinartz N, Richter L, Runkel S, Salisbury B, Sarantsev AV, Schaab D, Schmidt C, Schmieden H, Schultes J, Seifen T, Spieker K, Stausberg N, Steinacher M, Taubert F, Thiel A, Thoma U, Thomas A, Urban M, Urff G, Usov Y, van Pee H, Wang YC, Wendel C, Wiedner U, Wunderlich Y. Measurement of polarization observables T, P, and H in π0 and η photoproduction off quasi-free nucleons. Eur Phys J A Hadron Nucl 2023; 59:232. [PMID: 37860634 PMCID: PMC10582157 DOI: 10.1140/epja/s10050-023-01134-0] [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] [Figures] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 09/21/2023] [Indexed: 10/21/2023]
Abstract
The target asymmetry T, recoil asymmetry P, and beam-target double polarization observable H were determined in exclusive π 0 and η photoproduction off quasi-free protons and, for the first time, off quasi-free neutrons. The experiment was performed at the electron stretcher accelerator ELSA in Bonn, Germany, with the Crystal Barrel/TAPS detector setup, using a linearly polarized photon beam and a transversely polarized deuterated butanol target. Effects from the Fermi motion of the nucleons within deuterium were removed by a full kinematic reconstruction of the final state invariant mass. A comparison of the data obtained on the proton and on the neutron provides new insight into the isospin structure of the electromagnetic excitation of the nucleon. Earlier measurements of polarization observables in the γ p → π 0 p and γ p → η p reactions are confirmed. The data obtained on the neutron are of particular relevance for clarifying the origin of the narrow structure in the η n system at W = 1.68 GeV . A comparison with recent partial wave analyses favors the interpretation of this structure as arising from interference of the S 11 ( 1535 ) and S 11 ( 1650 ) resonances within the S 11 -partial wave.
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Affiliation(s)
- N. Jermann
- Department of Physics, University of Basel, Basel, Switzerland
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - B. Krusche
- Department of Physics, University of Basel, Basel, Switzerland
| | - V. Metag
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
| | - F. Afzal
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Badea
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - R. Beck
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - P. Bielefeldt
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Bieling
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Biroth
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - E. Blanke
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - N. Borisov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M. Bornstein
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - K.-T. Brinkmann
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
| | - S. Ciupka
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - V. Crede
- Department of Physics, Florida State University, Tallahassee, USA
| | - A. Dolzhikov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - P. Drexler
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - H. Dutz
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - D. Elsner
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - A. Fedorov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - F. Frommberger
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - S. Gardner
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
| | - D. Ghosal
- Department of Physics, University of Basel, Basel, Switzerland
- Present Address: resent address: University of Liverpool, Liverpool, UK
| | - S. Goertz
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - I. Gorodnov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - M. Grüner
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Hammann
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Hartmann
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - W. Hillert
- Physikalisches Institut, University of Bonn, Bonn, Germany
- Present Address: resent address: University of Hamburg, Hamburg, Germany
| | - P. Hoffmeister
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Honisch
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - T. C. Jude
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - F. Kalischewski
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - B. Ketzer
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - P. Klassen
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - F. Klein
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - E. Klempt
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Knaust
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - N. Kolanus
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Kreit
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - P. Krönert
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Lang
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | | | - K. Livingston
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
| | - S. Lutterer
- Department of Physics, University of Basel, Basel, Switzerland
- Present Address: resent address: Ruhr University Bochum, Bochum, Germany
| | - P. Mahlberg
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Meier
- Department of Physics, University of Basel, Basel, Switzerland
| | - W. Meyer
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
| | - B. Mitlasoczki
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. Müllers
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Nanova
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
| | - A. Neganov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - K. Nikonov
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - J. F. Noël
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Ostrick
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - J. Ottnad
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - B. Otto
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - G. Penman
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
| | - T. Poller
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - D. Proft
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - G. Reicherz
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
| | - N. Reinartz
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - L. Richter
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - S. Runkel
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - B. Salisbury
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - A. V. Sarantsev
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - D. Schaab
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Schmidt
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - H. Schmieden
- Physikalisches Institut, University of Bonn, Bonn, Germany
| | - J. Schultes
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - T. Seifen
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - K. Spieker
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - N. Stausberg
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - M. Steinacher
- Department of Physics, University of Basel, Basel, Switzerland
| | - F. Taubert
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - A. Thiel
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - U. Thoma
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - A. Thomas
- Institut für Kernphysik, University of Mainz, Mainz, Germany
| | - M. Urban
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - G. Urff
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - Y. Usov
- Joint Institute for Nuclear Research, Dubna, Russia
| | - H. van Pee
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - Y. C. Wang
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - C. Wendel
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - U. Wiedner
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
| | - Y. Wunderlich
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
| | - CBELSA/TAPS Collaboration
- Department of Physics, University of Basel, Basel, Switzerland
- Helmholtz-Institut für Strahlen-und Kernphysik, University of Bonn, Bonn, Germany
- II. Physikalisches Institut, University of Giessen, Giessen, Germany
- Institut für Kernphysik, University of Mainz, Mainz, Germany
- Joint Institute for Nuclear Research, Dubna, Russia
- Department of Physics, Florida State University, Tallahassee, USA
- Physikalisches Institut, University of Bonn, Bonn, Germany
- SUPA School of Physics and Astronomy, University of Glasgow, Glasgow, UK
- Institut für Experimentalphysik I, Ruhr University Bochum, Bochum, Germany
- Present Address: resent address: University of Liverpool, Liverpool, UK
- Present Address: resent address: University of Hamburg, Hamburg, Germany
- Present Address: resent address: Ruhr University Bochum, Bochum, Germany
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Gottschall M, Afzal F, Anisovich AV, Bayadilov D, Beck R, Bichow M, Brinkmann KT, Crede V, Dieterle M, Dietz F, Dutz H, Eberhardt H, Elsner D, Ewald R, Fornet-Ponse K, Friedrich S, Frommberger F, Gridnev A, Grüner M, Gutz E, Hammann C, Hannappel J, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jude T, Kammer S, Kalinowsky H, Keshelashvili I, Klassen P, Klein F, Klempt E, Koop K, Krusche B, Kube M, Lang M, Lopatin I, Mahlberg P, Makonyi K, Metag V, Meyer W, Müller J, Müllers J, Nanova M, Nikonov V, Novotny R, Piontek D, Reicherz G, Rostomyan T, Sarantsev A, Schmidt C, Schmieden H, Seifen T, Sokhoyan V, Spieker K, Thiel A, Thoma U, Urban M, Pee HV, Walther D, Wendel C, Werthmüller D, Wiedner U, Wilson A, Winnebeck A, Witthauer L, Wunderlich Y. Measurement of the helicity asymmetry E for the reaction γ p → π 0 p : The CBELSA/TAPS Collaboration. Eur Phys J A Hadron Nucl 2021; 57:40. [PMID: 33551676 PMCID: PMC7840663 DOI: 10.1140/epja/s10050-020-00334-2] [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] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 11/28/2020] [Indexed: 06/12/2023]
Abstract
A measurement of the double-polarization observable E for the reaction γ p → π 0 p is reported. The data were taken with the CBELSA/TAPS experiment at the ELSA facility in Bonn using the Bonn frozen-spin butanol (C4 H9 OH) target, which provided longitudinally-polarized protons. Circularly-polarized photons were produced via bremsstrahlung of longitudinally-polarized electrons. The data cover the photon energy range fromE γ = 600 to 2310 MeV and nearly the complete angular range. The results are compared to and have been included in recent partial wave analyses.
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Affiliation(s)
- M. Gottschall
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - F. Afzal
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - A. V. Anisovich
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - D. Bayadilov
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R. Beck
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - M. Bichow
- Institut für Experimentalphysik I, Ruhr–Universität Bochum, Bochum, Germany
| | | | - V. Crede
- Department of Physics, Florida State University, Tallahassee, FL 32306 USA
| | - M. Dieterle
- Physikalisches Institut, Universität Basel, Basel, Switzerland
| | - F. Dietz
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - H. Dutz
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - H. Eberhardt
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - D. Elsner
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - R. Ewald
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | | | - St. Friedrich
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - F. Frommberger
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - A. Gridnev
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - M. Grüner
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - E. Gutz
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - Ch. Hammann
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - J. Hannappel
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - J. Hartmann
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - W. Hillert
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - Ph. Hoffmeister
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - Ch. Honisch
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - T. Jude
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - S. Kammer
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - H. Kalinowsky
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | | | - P. Klassen
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - F. Klein
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - E. Klempt
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - K. Koop
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - B. Krusche
- Physikalisches Institut, Universität Basel, Basel, Switzerland
| | - M. Kube
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - M. Lang
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - I. Lopatin
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - P. Mahlberg
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - K. Makonyi
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - V. Metag
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - W. Meyer
- Institut für Experimentalphysik I, Ruhr–Universität Bochum, Bochum, Germany
| | - J. Müller
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - J. Müllers
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - M. Nanova
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - V. Nikonov
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R. Novotny
- Physikalisches Institut, Universität Gießen, Gießen, Germany
| | - D. Piontek
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - G. Reicherz
- Institut für Experimentalphysik I, Ruhr–Universität Bochum, Bochum, Germany
| | - T. Rostomyan
- Physikalisches Institut, Universität Basel, Basel, Switzerland
| | - A. Sarantsev
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - Ch. Schmidt
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - H. Schmieden
- Physikalisches Institut, Universität Bonn, Bonn, Germany
| | - T. Seifen
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - V. Sokhoyan
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - K. Spieker
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - A. Thiel
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - U. Thoma
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - M. Urban
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - H. van Pee
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - D. Walther
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - Ch. Wendel
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - D. Werthmüller
- Physikalisches Institut, Universität Basel, Basel, Switzerland
| | - U. Wiedner
- Institut für Experimentalphysik I, Ruhr–Universität Bochum, Bochum, Germany
| | - A. Wilson
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
- Department of Physics, Florida State University, Tallahassee, FL 32306 USA
| | - A. Winnebeck
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
| | - L. Witthauer
- Physikalisches Institut, Universität Basel, Basel, Switzerland
| | - Y. Wunderlich
- Helmholtz–Institut für Strahlen– und Kernphysik, Universität Bonn, Bonn, Germany
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Afzal F, Wunderlich Y, Anisovich AV, Bayadilov D, Beck R, Becker M, Blanke E, Brinkmann KT, Ciupka S, Crede V, Dieterle M, Dutz H, Elsner D, Friedrich S, Frommberger F, Gridnev A, Gottschall M, Grüner M, Gutz E, Hammann C, Hannappel J, Hartmann J, Hillert W, Hoff J, Hoffmeister P, Honisch C, Jude T, Kalinowsky H, Kalischewski F, Keshelashvili I, Klassen P, Klein F, Klempt E, Koop K, Kroenert P, Krusche B, Lang M, Lopatin I, Mahlberg P, Meißner UG, Messi F, Metag V, Meyer W, Mitlasóczki B, Müller J, Müllers J, Nanova M, Nikonov K, Nikonov V, Novinskiy V, Novotny R, Piontek D, Reicherz G, Richter L, Rönchen D, Rostomyan T, Salisbury B, Sarantsev A, Schaab D, Schmidt C, Schmieden H, Schultes J, Seifen T, Sokhoyan V, Sowa C, Spieker K, Stausberg N, Thiel A, Thoma U, Triffterer T, Urban M, Urff G, van Pee H, Walther D, Wendel C, Wiedner U, Wilson A, Winnebeck A, Witthauer L. Observation of the pη^{'} Cusp in the New Precise Beam Asymmetry Σ Data for γp→pη. Phys Rev Lett 2020; 125:152002. [PMID: 33095637 DOI: 10.1103/physrevlett.125.152002] [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] [Received: 06/01/2020] [Revised: 07/24/2020] [Accepted: 08/28/2020] [Indexed: 06/11/2023]
Abstract
Data on the beam asymmetry Σ in the photoproduction of η mesons off protons are reported for tagged photon energies from 1130 to 1790 MeV (mass range from W=1748 MeV to W=2045 MeV). The data cover the full solid angle that allows for a precise moment analysis. For the first time, a strong cusp effect in a polarization observable has been observed that is an effect of a branch-point singularity at the pη^{'} threshold [E_{γ}=1447 MeV (W=1896 MeV)]. The latest BnGa partial wave analysis includes the new beam asymmetry data and yields a strong indication for the N(1895)1/2^{-} nucleon resonance, demonstrating the importance of including all singularities for a correct determination of partial waves and resonance parameters.
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Affiliation(s)
- F Afzal
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - Y Wunderlich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - A V Anisovich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - D Bayadilov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - M Becker
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - E Blanke
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - K-Th Brinkmann
- II. Physikalisches Institut, Universität Giessen, Germany
| | - S Ciupka
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - V Crede
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - M Dieterle
- Physikalisches Institut, Universität Basel, Switzerland
| | - H Dutz
- Physikalisches Institut, Universität Bonn, Germany
| | - D Elsner
- Physikalisches Institut, Universität Bonn, Germany
| | - S Friedrich
- II. Physikalisches Institut, Universität Giessen, Germany
| | | | - A Gridnev
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - M Gottschall
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - M Grüner
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - E Gutz
- II. Physikalisches Institut, Universität Giessen, Germany
| | - C Hammann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - J Hannappel
- Physikalisches Institut, Universität Bonn, Germany
| | - J Hartmann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - W Hillert
- Physikalisches Institut, Universität Bonn, Germany
| | - J Hoff
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - P Hoffmeister
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - C Honisch
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Jude
- Physikalisches Institut, Universität Bonn, Germany
| | - H Kalinowsky
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - F Kalischewski
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | | | - P Klassen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - F Klein
- Physikalisches Institut, Universität Bonn, Germany
| | - E Klempt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - K Koop
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - P Kroenert
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - B Krusche
- Physikalisches Institut, Universität Basel, Switzerland
| | - M Lang
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - I Lopatin
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - P Mahlberg
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - U-G Meißner
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany
| | - F Messi
- Physikalisches Institut, Universität Bonn, Germany
| | - V Metag
- II. Physikalisches Institut, Universität Giessen, Germany
| | - W Meyer
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - B Mitlasóczki
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - J Müller
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - J Müllers
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - M Nanova
- II. Physikalisches Institut, Universität Giessen, Germany
| | - K Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - V Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - V Novinskiy
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - R Novotny
- II. Physikalisches Institut, Universität Giessen, Germany
| | - D Piontek
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - G Reicherz
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - L Richter
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - D Rönchen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Rostomyan
- Physikalisches Institut, Universität Basel, Switzerland
| | - B Salisbury
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - A Sarantsev
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- National Research Centre "Kurchatov Institute", Petersburg Nuclear Physics Institute, Gatchina, Russia
| | - D Schaab
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - C Schmidt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - H Schmieden
- Physikalisches Institut, Universität Bonn, Germany
| | - J Schultes
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Seifen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - V Sokhoyan
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - C Sowa
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - K Spieker
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - N Stausberg
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - U Thoma
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - T Triffterer
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - M Urban
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - G Urff
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - H van Pee
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - D Walther
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - Ch Wendel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - U Wiedner
- Institut für Experimentalphysik I, Ruhr Universität Bochum, Germany
| | - A Wilson
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - A Winnebeck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
| | - L Witthauer
- Physikalisches Institut, Universität Basel, Switzerland
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4
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Alef S, Bauer P, Bayadilov D, Beck R, Becker M, Bella A, Bielefeldt P, Böse S, Braghieri A, Brinkmann K, Cole P, Di Salvo R, Dutz H, Elsner D, Fantini A, Freyermuth O, Friedrich S, Frommberger F, Ganenko V, Geffers D, Gervino G, Ghio F, Görtz S, Gridnev A, Gutz E, Hammann D, Hannappel J, Hillert W, Ignatov A, Jahn R, Joosten R, Jude T, Klein F, Knaust J, Kohl K, Koop K, Krusche B, Lapik A, Levi Sandri P, Lopatin I, Mandaglio G, Messi F, Messi R, Metag V, Moricciani D, Mushkarenkov A, Nanova M, Nedorezov V, Novinskiy D, Pedroni P, Reitz B, Romaniuk M, Rostomyan T, Rudnev N, Schaerf C, Scheluchin G, Schmieden H, Stugelev A, Sumachev V, Tarakanov V, Vegna V, Walther D, Watts D, Zaunick H, Zimmermann T. Commissioning and initial experimental program of the BGO-OD experiment at ELSA. EPJ Web Conf 2016. [DOI: 10.1051/epjconf/201613007013] [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: 11/15/2022] Open
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5
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Thiel A, Sokhoyan V, Gutz E, van Pee H, Anisovich AV, Bacelar JCS, Bantes B, Bartholomy O, Bayadilov D, Beck R, Beloglazov Y, Castelijns R, Crede V, Dutz H, Elsner D, Ewald R, Frommberger F, Fuchs M, Funke C, Gregor R, Gridnev A, Hillert W, Hoffmeister P, Horn I, Jaegle I, Junkersfeld J, Kalinowsky H, Kammer S, Kleber V, Klein F, Klein F, Klempt E, Kotulla M, Krusche B, Lang M, Löhner H, Lopatin I, Lugert S, Mertens T, Messchendorp JG, Metag V, Metsch B, Nanova M, Nikonov V, Novinski D, Novotny R, Ostrick M, Pant L, Pfeiffer M, Piontek D, Roy A, Sarantsev AV, Schmidt C, Schmieden H, Shende S, Süle A, Sumachev VV, Szczepanek T, Thoma U, Trnka D, Varma R, Walther D, Wendel C, Wilson A. Three-body nature of N(*) and Δ(*) resonances from sequential decay chains. Phys Rev Lett 2015; 114:091803. [PMID: 25793801 DOI: 10.1103/physrevlett.114.091803] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Indexed: 06/04/2023]
Abstract
The Nπ^{0}π^{0} decays of positive-parity N^{*} and Δ^{*} resonances at about 2 GeV are studied at ELSA by photoproduction of two neutral pions off protons. The data reveal clear evidence for several intermediate resonances: Δ(1232), N(1520)3/2^{-}, and N(1680)5/2^{+}, with spin parities J^{P}=3/2^{+}, 3/2^{-}, and 5/2^{+}. The partial wave analysis (within the Bonn-Gatchina approach) identifies N(1440)1/2^{+} and the N(ππ)_{S wave} (abbreviated as Nσ here) as further isobars and assigns the final states to the formation of nucleon and Δ resonances and to nonresonant contributions. We observe the known Δ(1232)π decays of Δ(1910)1/2^{+}, Δ(1920)3/2^{+}, Δ(1905)5/2^{+}, Δ(1950)7/2^{+}, and of the corresponding spin-parity series in the nucleon sector, N(1880)1/2^{+}, N(1900)3/2^{+}, N(2000)5/2^{+}, and N(1990)7/2^{+}. For the nucleon resonances, these decay modes are reported here for the first time. Further new decay modes proceed via N(1440)1/2^{+}π, N(1520)3/2^{-}π, N(1680)5/2^{+}π, and Nσ. The latter decay modes are observed in the decay of N^{*} resonances and at most weakly in Δ^{*} decays. It is argued that these decay modes provide evidence for a 3-quark nature of N^{*} resonances rather than a quark-diquark structure.
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Affiliation(s)
- A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - V Sokhoyan
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - E Gutz
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - H van Pee
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - A V Anisovich
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - J C S Bacelar
- Kernfysisch Versneller Instituut, University of Groningen, 9747 AA Groningen, The Netherlands
| | - B Bantes
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - O Bartholomy
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - D Bayadilov
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - Yu Beloglazov
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - R Castelijns
- Kernfysisch Versneller Instituut, University of Groningen, 9747 AA Groningen, The Netherlands
| | - V Crede
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - H Dutz
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - D Elsner
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - R Ewald
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - F Frommberger
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - M Fuchs
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - Ch Funke
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - R Gregor
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - A Gridnev
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - W Hillert
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - Ph Hoffmeister
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - I Horn
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - I Jaegle
- Physikalisches Institut, Universität Basel, 4056 Basel, Switzerland
| | - J Junkersfeld
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - H Kalinowsky
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - S Kammer
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - V Kleber
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - Frank Klein
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - Friedrich Klein
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - E Klempt
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - M Kotulla
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
- Physikalisches Institut, Universität Basel, 4056 Basel, Switzerland
| | - B Krusche
- Physikalisches Institut, Universität Basel, 4056 Basel, Switzerland
| | - M Lang
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - H Löhner
- Kernfysisch Versneller Instituut, University of Groningen, 9747 AA Groningen, The Netherlands
| | - I Lopatin
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - S Lugert
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - T Mertens
- Physikalisches Institut, Universität Basel, 4056 Basel, Switzerland
| | - J G Messchendorp
- Kernfysisch Versneller Instituut, University of Groningen, 9747 AA Groningen, The Netherlands
| | - V Metag
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - B Metsch
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - M Nanova
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - V Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - D Novinski
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - R Novotny
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - M Ostrick
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - L Pant
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - M Pfeiffer
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - D Piontek
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - A Roy
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - A V Sarantsev
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - Ch Schmidt
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - H Schmieden
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - S Shende
- Kernfysisch Versneller Instituut, University of Groningen, 9747 AA Groningen, The Netherlands
| | - A Süle
- Physikalisches Institut, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - V V Sumachev
- Petersburg Nuclear Physics Institute, Gatchina, Leningrad district 188300, Russia
| | - T Szczepanek
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - U Thoma
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - D Trnka
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - R Varma
- II. Physikalisches Institut, Justus-Liebig-Universität Gießen, 35392 Gießen, Germany
| | - D Walther
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - Ch Wendel
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
| | - A Wilson
- Helmholtz-Institut für Strahlen- und Kernphysik, Friedrich-Wilhelms Universität, 53115 Bonn, Germany
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
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6
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Hartmann J, Dutz H, Anisovich AV, Bayadilov D, Beck R, Becker M, Beloglazov Y, Berlin A, Bichow M, Böse S, Brinkmann KT, Crede V, Dieterle M, Eberhardt H, Elsner D, Fornet-Ponse K, Friedrich S, Frommberger F, Funke C, Gottschall M, Gridnev A, Grüner M, Gutz E, Hammann C, Hannappel J, Hannen V, Herick J, Hillert W, Hoffmeister P, Honisch C, Jahn O, Jude T, Käser A, Kaiser D, Kalinowsky H, Kalischewski F, Klassen P, Keshelashvili I, Klein F, Klempt E, Koop K, Krusche B, Kube M, Lang M, Lopatin I, Makonyi K, Messi F, Metag V, Meyer W, Müller J, Nanova M, Nikonov V, Novinski D, Novotny R, Piontek D, Rosenbaum C, Roth B, Reicherz G, Rostomyan T, Sarantsev A, Schmidt C, Schmieden H, Schmitz R, Seifen T, Sokhoyan V, Thämer P, Thiel A, Thoma U, Urban M, van Pee H, Walther D, Wendel C, Wiedner U, Wilson A, Winnebeck A, Witthauer L, Wunderlich Y. N(1520) 3/2(-) helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions. Phys Rev Lett 2014; 113:062001. [PMID: 25148317 DOI: 10.1103/physrevlett.113.062001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Indexed: 06/03/2023]
Abstract
New data on the polarization observables T, P, and H for the reaction γp→pπ(0) are reported. The results are extracted from azimuthal asymmetries when a transversely polarized butanol target and a linearly polarized photon beam are used. The data were taken at the Bonn electron stretcher accelerator ELSA using the CBELSA/TAPS detector. These and earlier data are used to perform a truncated energy-independent partial wave analysis in sliced-energy bins. This energy-independent analysis is compared to the results from energy-dependent partial wave analyses.
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Affiliation(s)
- J Hartmann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H Dutz
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - A V Anisovich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - D Bayadilov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - R Beck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Becker
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Y Beloglazov
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - A Berlin
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - M Bichow
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - S Böse
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - K-Th Brinkmann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - V Crede
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - M Dieterle
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - H Eberhardt
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - D Elsner
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - K Fornet-Ponse
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - St Friedrich
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - F Frommberger
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - Ch Funke
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Gottschall
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - A Gridnev
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - M Grüner
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - E Gutz
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - Ch Hammann
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - J Hannappel
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - V Hannen
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - J Herick
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - W Hillert
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - Ph Hoffmeister
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Ch Honisch
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - O Jahn
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - T Jude
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - A Käser
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - D Kaiser
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H Kalinowsky
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - F Kalischewski
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - P Klassen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - I Keshelashvili
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - F Klein
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - E Klempt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - K Koop
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - B Krusche
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - M Kube
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Lang
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - I Lopatin
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - K Makonyi
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - F Messi
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - V Metag
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - W Meyer
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - J Müller
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Nanova
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - V Nikonov
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - D Novinski
- Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - R Novotny
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - D Piontek
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - C Rosenbaum
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - B Roth
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - G Reicherz
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - T Rostomyan
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - A Sarantsev
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina 188300, Russia
| | - Ch Schmidt
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H Schmieden
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - R Schmitz
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - T Seifen
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - V Sokhoyan
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Ph Thämer
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - U Thoma
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Urban
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H van Pee
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - D Walther
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Ch Wendel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - U Wiedner
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - A Wilson
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - A Winnebeck
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - L Witthauer
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - Y Wunderlich
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, 53115 Bonn, Germany
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7
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Gottschall M, Anisovich AV, Bantes B, Bayadilov D, Beck R, Bichow M, Böse S, Brinkmann KT, Challand T, Crede V, Dietz F, Dutz H, Eberhardt H, Elsner D, Ewald R, Fornet-Ponse K, Friedrich S, Frommberger F, Funke C, Gridnev A, Grüner M, Gutz E, Hammann C, Hannappel J, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jaegle I, Kaiser D, Kalinowsky H, Kammer S, Keshelashvili I, Klein F, Klempt E, Koop K, Krusche B, Kube M, Lang M, Lopatin I, Maghrbi Y, Makonyi K, Metag V, Meyer W, Müller J, Nanova M, Nikonov V, Novotny R, Piontek D, Reicherz G, Rostomyan T, Sarantsev A, Schaepe S, Schmidt C, Schmieden H, Schmitz R, Seifen T, Sokhoyan V, Thiel A, Thoma U, Urban M, van Pee H, Walther D, Wendel C, Wiedner U, Wilson A, Winnebeck A. First measurement of the helicity asymmetry for γp → pπ0 in the resonance region. Phys Rev Lett 2014; 112:012003. [PMID: 24483889 DOI: 10.1103/physrevlett.112.012003] [Citation(s) in RCA: 10] [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: 09/18/2013] [Indexed: 06/03/2023]
Abstract
The first measurement of the helicity dependence of the photoproduction cross section of single neutral pions off protons is reported for photon energies from 600 to 2300 MeV, covering nearly the full solid angle. The data are compared to predictions from the SAID, MAID, and BnGa partial wave analyses. Strikingly large differences between data and predictions are observed, which are traced to differences in the helicity amplitudes of well-known and established resonances. Precise values for the helicity amplitudes of several resonances are reported.
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Affiliation(s)
- M Gottschall
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - A V Anisovich
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina, 188300 Russia
| | - B Bantes
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - D Bayadilov
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina, 188300 Russia
| | - R Beck
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Bichow
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - S Böse
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - K-Th Brinkmann
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany and II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - Th Challand
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - V Crede
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - F Dietz
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - H Dutz
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - H Eberhardt
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - D Elsner
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - R Ewald
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - K Fornet-Ponse
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - St Friedrich
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - F Frommberger
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - Ch Funke
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - A Gridnev
- Petersburg Nuclear Physics Institute, Gatchina, 188300 Russia
| | - M Grüner
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - E Gutz
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany and II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - Ch Hammann
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - J Hannappel
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - J Hartmann
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - W Hillert
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - Ph Hoffmeister
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Ch Honisch
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - I Jaegle
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - D Kaiser
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H Kalinowsky
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - S Kammer
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - I Keshelashvili
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - F Klein
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - E Klempt
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - K Koop
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - B Krusche
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - M Kube
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Lang
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - I Lopatin
- Petersburg Nuclear Physics Institute, Gatchina, 188300 Russia
| | - Y Maghrbi
- Department Physik, Universität Basel, 4056 Basel, Switzerland
| | - K Makonyi
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - V Metag
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - W Meyer
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - J Müller
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Nanova
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - V Nikonov
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina, 188300 Russia
| | - R Novotny
- II. Physikalisches Institut, Universität Gießen, 35392 Gießen, Germany
| | - D Piontek
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - G Reicherz
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - T Rostomyan
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - A Sarantsev
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany and Petersburg Nuclear Physics Institute, Gatchina, 188300 Russia
| | - St Schaepe
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Ch Schmidt
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H Schmieden
- Physikalisches Institut, Universität Bonn, 53115 Bonn, Germany
| | - R Schmitz
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - T Seifen
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - V Sokhoyan
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - A Thiel
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - U Thoma
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - M Urban
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - H van Pee
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - D Walther
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - Ch Wendel
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
| | - U Wiedner
- Institut für Experimentalphysik I, Ruhr-Universität Bochum, 44780 Bochum, Germany
| | - A Wilson
- Department of Physics, Florida State University, Tallahassee, Florida 32306, USA
| | - A Winnebeck
- Helmholtz-Institut für Strahlen-und Kernphysik, Universität Bonn, 53115 Bonn, Germany
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8
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Thiel A, Anisovich AV, Bayadilov D, Bantes B, Beck R, Beloglazov Y, Bichow M, Böse S, Brinkmann KT, Challand T, Crede V, Dietz F, Drexler P, Dutz H, Eberhardt H, Elsner D, Ewald R, Fornet-Ponse K, Friedrich S, Frommberger F, Funke C, Gottschall M, Grüner M, Gutz E, Hammann C, Hannappel J, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jaegle I, Jürgensen I, Kaiser D, Kalinowsky H, Kalischewski F, Kammer S, Keshelashvili I, Kleber V, Klein F, Klempt E, Krusche B, Lang M, Lopatin I, Maghrbi Y, Makonyi K, Metag V, Meyer W, Müller J, Nanova M, Nikonov V, Novotny R, Piontek D, Reicherz G, Sarantsev A, Schmidt C, Schmieden H, Seifen T, Sokhoyan V, Sumachev V, Thoma U, vanPee H, Walther D, Wendel C, Wiedner U, Wilson A, Winnebeck A, Wunderlich Y. Thiel et al. reply:. Phys Rev Lett 2013; 110:169102. [PMID: 23679652 DOI: 10.1103/physrevlett.110.169102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Indexed: 06/02/2023]
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9
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Thiel A, Anisovich AV, Bayadilov D, Bantes B, Beck R, Beloglazov Y, Bichow M, Böse S, Brinkmann KT, Challand T, Crede V, Dietz F, Drexler P, Dutz H, Eberhardt H, Elsner D, Ewald R, Fornet-Ponse K, Friedrich S, Frommberger F, Funke C, Gottschall M, Grüner M, Gutz E, Hammann C, Hannappel J, Hartmann J, Hillert W, Hoffmeister P, Honisch C, Jaegle I, Jürgensen I, Kaiser D, Kalinowsky H, Kalischewski F, Kammer S, Keshelashvili I, Kleber V, Klein F, Klempt E, Krusche B, Lang M, Lopatin I, Maghrbi Y, Makonyi K, Metag V, Meyer W, Müller J, Nanova M, Nikonov V, Novotny R, Piontek D, Reicherz G, Sarantsev A, Schmidt C, Schmieden H, Seifen T, Sokhoyan V, Sumachev V, Thoma U, Vanpee H, Walther D, Wendel C, Wiedner U, Wilson A, Winnebeck A, Wunderlich Y. Well-established nucleon resonances revisited by double-polarization measurements. Phys Rev Lett 2012; 109:102001. [PMID: 23005280 DOI: 10.1103/physrevlett.109.102001] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2012] [Indexed: 06/01/2023]
Abstract
The first measurement is reported of the double-polarization observable G in the photoproduction of neutral pions off protons, covering the photon energy range from 620 to 1120 MeV and the full solid angle. G describes the correlation between the photon polarization plane and the scattering plane for protons polarized along the direction of the incoming photon. The observable is highly sensitive to contributions from baryon resonances. The new results are compared to the predictions from SAID, MAID, and BnGa partial wave analyses. In spite of the long-lasting efforts to understand γp→pπ(0) as the simplest photoproduction reaction, surprisingly large differences between the new data and the latest predictions are observed which are traced to different contributions of the N(1535) resonance with spin parity J(P)=1/2(-) and N(1520) with J(P)=3/2(-). In the third resonance region, where N(1680) with J(P)=5/2(+) production dominates, the new data are reasonably close to the predictions.
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Affiliation(s)
- A Thiel
- Helmholtz-Institut für Strahlen- und Kernphysik, Universität Bonn, Germany
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10
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11
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Jaegle I, Mertens T, Anisovich AV, Bacelar JCS, Bantes B, Bartholomy O, Bayadilov D, Beck R, Beloglazov YA, Castelijns R, Crede V, Dutz H, Ehmanns A, Elsner D, Essig K, Ewald R, Fabry I, Fuchs M, Funke C, Gothe R, Gregor R, Gridnev AB, Gutz E, Höffgen S, Hoffmeister P, Horn I, Junkersfeld J, Kalinowsky H, Kammer S, Kleber V, Klein F, Klein F, Klempt E, Konrad M, Kotulla M, Krusche B, Lang M, Langheinrich J, Löhner H, Lopatin IV, Lotz J, Lugert S, Menze D, Messchendorp JG, Metag V, Morales C, Nanova M, Nikonov VA, Novinski D, Novotny R, Ostrick M, Pant LM, van Pee H, Pfeiffer M, Radkov A, Roy A, Sarantsev AV, Schadmand S, Schmidt C, Schmieden H, Schoch B, Shende SV, Sokhoyan V, Süle A, Sumachev VV, Szczepanek T, Thoma U, Trnka D, Varma R, Walther D, Weinheimer C, Wendel C. Quasifree photoproduction of eta mesons off the neutron. Phys Rev Lett 2008; 100:252002. [PMID: 18643655 DOI: 10.1103/physrevlett.100.252002] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2008] [Indexed: 05/26/2023]
Abstract
Quasifree photoproduction of eta mesons off nucleons bound in the deuteron has been measured with the CBELSA/TAPS detector for incident photon energies up to 2.5 GeV at the Bonn ELSA accelerator. The eta mesons have been detected in coincidence with recoil protons and recoil neutrons, which allows a detailed comparison of the quasifree n(gamma,eta)n and p(gamma,eta)p reactions. The excitation function for eta production off the neutron shows a pronounced bumplike structure at W=1.68 GeV (E{gamma} approximately 1 GeV), which is absent for the proton.
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Affiliation(s)
- I Jaegle
- Department Physik, Universität Basel, Switzerland
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12
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Kotulla M, Trnka D, Mühlich P, Anton G, Bacelar JCS, Bartholomy O, Bayadilov D, Beloglazov YA, Bogendörfer R, Castelijns R, Crede V, Dutz H, Ehmanns A, Elsner D, Ewald R, Fabry I, Fuchs M, Essig K, Funke C, Gothe R, Gregor R, Gridnev AB, Gutz E, Höffgen S, Hoffmeister P, Horn I, Hössl J, Jaegle I, Junkersfeld J, Kalinowsky H, Klein F, Klein F, Klempt E, Konrad M, Kopf B, Krusche B, Langheinrich J, Löhner H, Lopatin IV, Lotz J, Lugert S, Menze D, Messchendorp JG, Mertens T, Metag V, Mosel U, Nanova M, Novotny R, Ostrick M, Pant LM, van Pee H, Pfeiffer M, Roy A, Radkov A, Schadmand S, Schmidt C, Schmieden H, Schoch B, Shende S, Suft G, Sumachev VV, Szczepanek T, Süle A, Thoma U, Varma R, Walther D, Weinheimer C, Wendel C. Modification of the omega-meson lifetime in nuclear matter. Phys Rev Lett 2008; 100:192302. [PMID: 18518443 DOI: 10.1103/physrevlett.100.192302] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2007] [Indexed: 05/26/2023]
Abstract
Information on hadron properties in the nuclear medium has been derived from the photoproduction of omega mesons on the nuclei C, Ca, Nb, and Pb using the Crystal Barrel/TAPS detector at the ELSA tagged photon facility in Bonn. The dependence of the omega-meson cross section on the nuclear mass number has been compared with three different types of models: a Glauber analysis, a Boltzmann-Uehling-Uhlenbeck analysis of the Giessen theory group, and a calculation by the Valencia theory group. In all three cases, the inelastic omega width is found to be 130-150 MeV/c(2) at normal nuclear matter density for an average 3-momentum of 1.1 GeV/c. In the rest frame of the omega meson, this inelastic omega width corresponds to a reduction of the omega lifetime by a factor approximately 30. For the first time, the momentum dependent omegaN cross section has been extracted from the experiment and is in the range of 70 mb.
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Affiliation(s)
- M Kotulla
- II Physikalisches Institut, Universität Giessen, Giessen, Germany
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13
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Ahrens J, Altieri S, Annand JRM, Arends HJ, Beck R, Bradtke C, Braghieri A, d'Hose N, Dutz H, Goertz S, Grabmayr P, Hasegawa S, Heid E, Holvoet H, Van Hoorebeke L, Horikawa N, Iwata T, Jahn O, Jennewein P, Klein F, Kondratiev R, Lang M, Lannoy B, Lisin V, Martinez-Fabregate M, McGeorge JC, Meyer W, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Reicherz G, Rohlof C, Rosner G, Rost M, Rostomyan T, Ryckbosch D, Schumacher M, Seitz B, Tamas G, Thomas A, Van de Vyver R, Zapadtka F. Measurement of the Gerasimov-Drell-Hearn Integrand for 2H from 200 to 800 MeV. Phys Rev Lett 2006; 97:202303. [PMID: 17155680 DOI: 10.1103/physrevlett.97.202303] [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] [Received: 08/07/2006] [Indexed: 05/12/2023]
Abstract
A measurement of the helicity dependence of the total inclusive photoabsorption cross section on the deuteron was carried out at MAMI (Mainz) in the energy range 200<Egamma<800 MeV. The experiment used a 4pi detection system, a circularly polarized tagged photon beam and a frozen-spin target which provided longitudinally polarized deuterons. The contribution to the Gerasimov-Drell-Hearn sum rule for the deuteron determined from the data is 407+/-20(stat)+/-24(syst) mu b for 200<Egamma<800 MeV.
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Affiliation(s)
- J Ahrens
- Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany
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14
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Trnka D, Anton G, Bacelar JCS, Bartholomy O, Bayadilov D, Beloglazov YA, Bogendörfer R, Castelijns R, Crede V, Dutz H, Ehmanns A, Elsner D, Ewald R, Fabry I, Fuchs M, Essig K, Funke C, Gothe R, Gregor R, Gridnev AB, Gutz E, Höffgen S, Hoffmeister P, Horn I, Hössl J, Jaegle I, Junkersfeld J, Kalinowsky H, Klein F, Klein F, Klempt E, Konrad M, Kopf B, Kotulla M, Krusche B, Langheinrich J, Löhner H, Lopatin IV, Lotz J, Lugert S, Menze D, Messchendorp JG, Mertens T, Metag V, Morales C, Nanova M, Novotny R, Ostrick M, Pant LM, van Pee H, Pfeiffer M, Roy A, Radkov A, Schadmand S, Schmidt C, Schmieden H, Schoch B, Shende S, Suft G, Sumachev VV, Szczepanek T, Süle A, Thoma U, Varma R, Walther D, Weinheimer C, Wendel C. Observation of in-medium modifications of the omega meson. Phys Rev Lett 2005; 94:192303. [PMID: 16090166 DOI: 10.1103/physrevlett.94.192303] [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: 02/15/2005] [Indexed: 05/03/2023]
Abstract
The photoproduction of omega mesons on nuclei has been investigated using the Crystal Barrel/TAPS experiment at the ELSA tagged photon facility in Bonn. The aim is to study possible in-medium modifications of the omega meson via the reaction gamma + A --> omega + X --> pi(0)gamma + X('). Results obtained for Nb are compared to a reference measurement on a LH2 target. While for recoiling, long-lived mesons (pi(0), eta, and eta;(')), which decay outside of the nucleus, a difference in the line shape for the two data samples is not observed, we find a significant enhancement towards lower masses for omega mesons produced on the Nb target. For momenta less than 500 MeV/c an in-medium omega meson mass of M(medium) = [722(+4)(-4)(stat)+35-5(syst)] MeV/c(2) has been deduced at an estimated average nuclear density of 0.6rho(0).
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Affiliation(s)
- D Trnka
- II. Physikalisches Institut, Universität Giessen, Germany
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15
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Dutz H, Helbing K, Krimmer J, Speckner T, Zeitler G, Ahrens J, Altieri S, Annand JRM, Anton G, Arends HJ, Beck R, Bock A, Bradtke C, Braghieri A, v Drachenfels W, Frommberger F, Godo M, Goertz S, Grabmayr P, Hasegawa S, Hansen K, Harmsen J, Heid E, Hillert W, Holvoet H, Horikawa N, Iwata T, Van Hoorebeke L, d'Hose N, Jennewein P, Kiel B, Klein F, Kondratiev R, Lang M, Lannoy B, Leukel R, Lisin V, Menze D, Meyer W, Michel T, Naumann J, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E, Reicherz G, Rohlof C, Rostomyan T, Sauer M, Schoch B, Schumacher M, Tamas G, Thomas A, van de Vyver R, Weihofen W, Zapadtka F. Measurement of helicity-dependent photoabsorption cross sections on the neutron from 815 to 1825 MeV. Phys Rev Lett 2005; 94:162001. [PMID: 15904214 DOI: 10.1103/physrevlett.94.162001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2004] [Indexed: 05/02/2023]
Abstract
Helicity-dependent total photoabsorption cross sections on the deuteron have been measured for the first time at ELSA (Bonn) in the photon energy range from 815 to 1825 MeV. Circularly polarized tagged photons impinging on a longitudinally polarized LiD target have been used together with a highly efficient 4pi detector system. The data around 1 GeV are not compatible with predictions from existing multipole analyses. From the measured energy range an experimental contribution to the GDH integral on the neutron of [33.9 +/- 5.5(stat) +/- 4.5(syst)] microb is extracted.
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Affiliation(s)
- H Dutz
- Physikalisches Institut, Universität Bonn, D-53115 Bonn, Germany
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16
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Dutz H, Helbing K, Krimmer J, Speckner T, Zeitler G, Ahrens J, Altieri S, Annand JRM, Anton G, Arends HJ, Beck R, Bock A, Bradtke C, Braghieri A, v Drachenfels W, Frommberger F, Godo M, Goertz S, Grabmayr P, Hasegawa S, Hansen K, Harmsen J, Heid E, Hillert W, Holvoet H, Horikawa N, Iwata T, Hoorebeke LV, D'Hose N, Jennewein P, Kiel B, Klein F, Kondratiev R, Lang M, Lannoy B, Leukel R, Lisin V, Menze D, Meyer W, Michel T, Naumann J, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E, Reicherz G, Rohlof C, Rostomyan T, Sauer M, Schoch B, Schumacher M, Tamas G, Thomas A, van de Vyver R, Weihofen W, Zapadtka F. Experimental check of the Gerasimov-Drell-Hearn sum rule for 1H. Phys Rev Lett 2004; 93:032003. [PMID: 15323817 DOI: 10.1103/physrevlett.93.032003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2004] [Indexed: 05/24/2023]
Abstract
For the first time we checked the fundamental Gerasimov-Drell-Hearn (GDH) sum rule for the proton experimentally in the photon energy range from 0.2-2.9 GeV with the tagged photon facilities at MAMI (Mainz) and ELSA (Bonn). New data of the doubly polarized total cross section difference are presented in the energy range from 1.6 to 2.9 GeV. The contribution to the GDH integral from 0.2-2.9 GeV yields [254+/-5(stat)+/-12(syst)] microb with negative contributions in the Regge regime at photon energies above 2.1 GeV. This trend supports the validity of the GDH sum rule.
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Affiliation(s)
- H Dutz
- Physikalisches Institut, Universität Bonn, D-53115 Bonn, Germany
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17
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Dutz H, Helbing K, Krimmer J, Speckner T, Zeitler G, Ahrens J, Altieri S, Annand JRM, Anton G, Arends HJ, Beck R, Bock A, Bradtke C, Braghieri A, v Drachenfels W, Frommberger F, Godo M, Goertz S, Grabmayr P, Hasegawa S, Hansen K, Harmsen J, Heid E, Hillert W, Holvoet H, Horikawa N, Iwata T, Van Hoorebeke L, d'Hose N, Jennewein P, Kiel B, Klein F, Kondratiev R, Lang M, Lannoy B, Leukel R, Lisin V, Menze D, Meyer W, Michel T, Naumann J, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E, Reicherz G, Rohlof C, Rostomyan T, Sauer M, Schoch B, Schumacher M, Tamas G, Thomas A, van de Vyver R, Weihofen W, Zapadtka F. First Measurement of the Gerasimov-Drell-Hearn Sum Rule for 1H from 0.7 to 1.8 GeV at ELSA. Phys Rev Lett 2003; 91:192001. [PMID: 14611575 DOI: 10.1103/physrevlett.91.192001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2003] [Indexed: 05/24/2023]
Abstract
To verify the fundamental Gerasimov-Drell-Hearn (GDH) sum rule for the first time experimentally, we measured the helicity dependent total photoabsorption cross section with circularly polarized real photons and longitudinally polarized nucleons in the photon energy range 0.68-1.82 GeV with the tagged photon facility at ELSA. The experiment was carried out with a 4pi detection system, a circularly polarized tagged photon beam, and a frozen spin polarized proton target. The contribution to the GDH sum rule in this photon energy range is [49.9+/-2.4(stat)+/-2.2(syst)] microb.
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Affiliation(s)
- H Dutz
- Physikalisches Institut, Universität Bonn, D-53115 Bonn, Germany
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18
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Bassalleck B, Berdoz A, Bradtke C, Bröders R, Bunker B, Dennert H, Dutz H, Eilerts S, Eyrich W, Fields D, Fischer H, Franklin G, Franz J, Gehring R, Geyer R, Goertz S, Harmsen J, Hauffe J, Heinsius FH, Hertzog D, Johansson T, Jones T, Khaustov P, Kilian K, Kingsberry P, Kriegler E, Lowe J, Meier A, Metzger A, Meyer CA, Meyer W, Moosburger M, Oelert W, Paschke KD, Plückthun M, Pomp S, Quinn B, Radtke E, Reicherz G, Röhrich K, Sachs K, Schmitt H, Schoch B, Sefzick T, Stinzing F, Stotzer R, Tayloe R, Wirth S. Measurement of spin-transfer observables in p p-->Lambda Lambda at 1.637 GeV/c. Phys Rev Lett 2002; 89:212302. [PMID: 12443404 DOI: 10.1103/physrevlett.89.212302] [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: 06/02/2002] [Indexed: 05/24/2023]
Abstract
Spin-transfer observables for p p-->Lambda Lambda have been measured using a transversely polarized frozen-spin target and a beam momentum of 1.637 GeV/c. Current models of the reaction near threshold are in good agreement with existing measurements performed with unpolarized particles in the initial state but produce conflicting predictions for the spin-transfer observables Dnn and Knn (the normal-to-normal depolarization and polarization transfer), which are measurable only with polarized target or beam. Measurements of Dnn and Knn presented here are found to be in disagreement with predictions from these models.
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Affiliation(s)
- B Bassalleck
- University of New Mexico, Albuquerque, New Mexico 87131, USA
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19
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Ahrens J, Altieri S, Annand JRM, Anton G, Arends HJ, Aulenbacher K, Beck R, Bradtke C, Braghieri A, Degrande N, D'Hose N, Drechsel D, Dutz H, Goertz S, Grabmayr P, Hansen K, Harmsen J, Von Harrach D, Hasegawa S, Hasegawa T, Heid E, Helbing K, Holvoet H, Van Hoorebeke L, Horikawa N, Iwata T, Jahn O, Jennewein P, Kageya T, Kamalov S, Kiel B, Klein F, Kondratiev R, Kossert K, Krimmer J, Lang M, Lannoy B, Leukel R, Lisin V, Matsuda T, McGeorge JC, Meier A, Menze D, Meyer W, Michel T, Naumann J, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E, Reichert E, Reicherz G, Rohlof C, Rosner G, Ryckbosch D, Sauer M, Schoch B, Schumacher M, Seitz B, Speckner T, Takabayashi N, Tamas G, Thomas A, Tiator L, Van Vyver R, Wakai A, Weihofen W, Wissmann F, Zapadtka F, Zeitler G. Helicity amplitudes A1/2 and A3/2 for the D13(1520) resonance obtained from the gamma-->p-->-->ppi(0) Reaction. Phys Rev Lett 2002; 88:232002. [PMID: 12059355 DOI: 10.1103/physrevlett.88.232002] [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: 03/04/2002] [Indexed: 05/23/2023]
Abstract
The helicity dependence of the gamma-->p-->-->ppi(0) reaction has been measured for the first time in the photon-energy range from 550 to 790 MeV. The experiment, performed at the Mainz microtron MAMI, used a 4pi-detector system, a circularly polarized, tagged photon beam, and a longitudinally polarized frozen-spin target. These data are predominantly sensitive to the D13(1520) resonance and are used to determine its helicity amplitudes.
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Affiliation(s)
- J Ahrens
- Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany
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20
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Ahrens J, Altieri S, Annand JR, Anton G, Arends H, Aulenbacher K, Beck R, Bradtke C, Braghieri A, Degrande N, d'Hose N, Dutz H, Goertz S, Grabmayr P, Hansen K, Harmsen J, von Harrach D, Hasegawa S, Hasegawa T, Heid E, Helbing K, Holvoet H, Van Hoorebeke L, Horikawa N, Iwata T, Jennewein P, Kageya T, Kiel B, Klein F, Kondratiev R, Kossert K, Krimmer J, Lang M, Lannoy B, Leukel R, Lisin V, Matsuda T, McGeorge JC, Meier A, Menze D, Meyer W, Michel T, Naumann J, Owens RO, Panzeri A, Pedroni P, Pinelli T, Preobrajenski I, Radtke E. Helicity dependence of gammap --> Npi below 450 MeV and contribution to the Gerasimov-Drell-Hearn sum rule. Phys Rev Lett 2000; 84:5950-5954. [PMID: 10991096 DOI: 10.1103/physrevlett.84.5950] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2000] [Indexed: 05/23/2023]
Abstract
The helicity dependence of the single pion photoproduction on the proton has been measured in the energy range from 200 to 450 MeV for the first time. The experiment, performed at the Mainz microtron MAMI, used a 4pi-detector system, a circularly polarized, tagged photon beam, and a frozen-spin target. The data obtained provide new information for multipole analyses of pion photoproduction and determine the main contributions to the Gerasimov-Drell-Hearn sum rule and the forward spin polarizability gamma(0).
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Affiliation(s)
- J Ahrens
- Institut für Kernphysik, Universität Mainz, D-55099 Mainz, Germany.
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21
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Abe K, Akagi T, Anthony PL, Antonov R, Arnold RG, Averett T, Band HR, Bauer JM, Borel H, Bosted PE, Breton V, Button-Shafer J, Chen JP, Chupp TE, Clendenin J, Comptour C, Coulter KP, Court G, Crabb D, Daoudi M, Day D, Dietrich FS, Dunne J, Dutz H, Erbacher R, Fellbaum J, Feltham A, Fonvieille H, Frlez E, Garvey D, Gearhart R, Gomez J, Grenier P, Griffioen KA, Hoibraten S, Hughes EW, Hyde-Wright C, Johnson JR, Kawall D, Klein A, Kuhn SE, Kuriki M, Lindgren R, Liu TJ, Lombard-Nelsen RM, Marroncle J, Maruyama T, Maruyama XK, McCarthy J, Meyer W, Meziani Z, Minehart R, Mitchell J, Morgenstern J, Petratos GG, Pitthan R, Pocanic D, Prescott C, Prepost R, Raines P, Raue B, Reyna D, Rijllart A, Roblin Y. Measurements of the proton and deuteron spin structure function g2 and asymmetry A2. Phys Rev Lett 1996; 76:587-591. [PMID: 10061497 DOI: 10.1103/physrevlett.76.587] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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22
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Abe K, Akagi T, Anthony PL, Antonov R, Arnold RG, Averett T, Band HR, Bauer JM, Borel H, Bosted PE, Breton V, Button-Shafer J, Chen JP, Chupp TE, Clendenin J, Comptour C, Coulter KP, Court G, Crabb D, Daoudi M, Day D, Dietrich FS, Dunne J, Dutz H, Erbacher R, Fellbaum J, Feltham A, Fonvieille H, Frlez E, Garvey D, Gearhart R, Gomez J, Grenier P, Griffioen KA, Hoibraten S, Hughes EW, Hyde-Wright C, Johnson JR, Kawall D, Klein A, Kuhn SE, Kuriki M, Lindgren R, Liu T, Lombard-Nelsen RM, Marroncle J, Maruyama T, Maruyama XK, McCarthy J, Meyer W, Meziani Z, Minehart R, Mitchell J, Morgenstern J, Petratos GG, Pitthan R, Pocanic D, Prescott C, Prepost R, Raines P, Raue B, Reyna D, Rijllart A, Roblin Y. Precision measurement of the deuteron spin structure function gd1. Phys Rev Lett 1995; 75:25-28. [PMID: 10059106 DOI: 10.1103/physrevlett.75.25] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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23
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Abe K, Akagi T, Anthony PL, Antonov R, Arnold RG, Averett T, Band HR, Bauer JM, Borel H, Bosted PE, Breton V, Button-Shafer J, Chen JP, Chupp TE, Clendenin J, Comptour C, Coulter KP, Court G, Crabb D, Daoudi M, Day D, Dietrich FS, Dunne J, Dutz H, Erbacher R, Fellbaum J, Feltham A, Fonvieille H, Frlez E, Garvey D, Gearhart R, Gomez J, Grenier P, Griffioen KA, Hoibraten S, Hughes EW, Hyde-Wright C, Johnson JR, Kawall D, Klein A, Kuhn SE, Kuriki M, Lindgren R, Liu TJ, Lombard-Nelsen RM, Marroncle J, Maruyama T, Maruyama XK, McCarthy J, Meyer W, Meziani Z, Minehart R, Mitchell J, Morgenstern J, Petratos GG, Pitthan R, Pocanic D, Prescott C, Prepost R, Raines P, Raue B, Reyna D, Rijllart A, Roblin Y. Precision measurement of the proton spin structure function gp1. Phys Rev Lett 1995; 74:346-350. [PMID: 10058735 DOI: 10.1103/physrevlett.74.346] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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24
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Petzschmann S, Göbel U, Mohnike A, Geserick G, Natusch R, Dutz H. [Haptoglobin types and chronic glomerulonephritis]. Z Gesamte Inn Med 1980; 35:452-4. [PMID: 7434836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
In 88 patients a chronic glomerulonephritis was diagnosed by histology and immunohistology. The haptoglobin type was also analyzed. The distribution of the haptoglobin types in the sample did not differ from the haptoglobin distribution in the population of Berlin. The distributions of histologic and immunohistologic forms of glomerulonephritis were related to the haptoglobin distribution in our patients. The distribution of histological subgroups does not depend on the distribution of the haptoglobins. In evaluation of the immunohistological subgroups we found that immunocomplexnephritis is less frequent in the group Hp 1--1 than in the groups 2--1 and 2--2. We suppose that persons with Hp 2--1 and Hp 2--2 are prone to increased antibody formation. Hp 1--1 is presumably a blocking antibody.
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25
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Göbel E, Müller-Warmuth W, Olyschläger H, Dutz H. 7Li NMR spectra, nuclear relaxation, and lithium ion motion in alkali silicate, borate, and phosphate glasses. ACTA ACUST UNITED AC 1979. [DOI: 10.1016/0022-2364(79)90114-8] [Citation(s) in RCA: 15] [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: 11/28/2022]
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26
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Mushold R, Dutz H, Precht K, Buder HW, Schimmelpfennig R. [Effect of chemotherapy on kidney function in pyelonephritis due to calculi with kidney insufficiency]. Z Urol Nephrol 1978; 71:593-9. [PMID: 716643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In patients with stone pyelonephritis the behaviour of the renal function under the influence of chemotherapy was examined at the stage of the compensated retention. 24 cures carried out on clinical conditions on 10 patients with an average age of 52 years (14--71) were evaluated. By means of chemotherapy in connection with the treatment of anaemia and the compensation of acidosis the renal function could favourably be influenced and the terminal stage of the renal insufficiency could be shifted. The author adopts a definite attitude to the long-term prophylaxis.
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27
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Dutz H, Precht K. [Care of patients with kidney diseases in the German Democratic Republic]. Orv Hetil 1975; 116:795-7. [PMID: 1118150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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28
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Dutz H, Precht K. [Organization of nephrologic care in the GDR (German Democratic Republic)]. Z Urol Nephrol 1974; 67:737-43. [PMID: 4219521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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29
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Dutz H. [Directed measures of the ambulatory scope for the improvement of stationary care from the viewpoint of a specialist for kidney diseases]. Z Arztl Fortbild (Jena) 1974; 68:347-51. [PMID: 4605627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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30
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Hagemann I, Philipp H, Briedigkeit H, Dutz H. Immunosuppressive treatment of experimental pyelonephritis with a combination of oxytetracycline and azathioprine. Clin Nephrol 1973; 1:372-6. [PMID: 4594998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
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31
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Dutz H, Schmidt PK. [Diagnosis and therapy of renal artery stenosis from the viewpoint of an internist]. Zentralbl Chir 1973; 98:657-66. [PMID: 4582690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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32
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33
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Dutz H. [Current status of modern nephrology]. Z Gesamte Inn Med 1972; 27:957-62. [PMID: 4567948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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34
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Dutz H. [The 100th birthday of Franz Volhard]. Z Urol Nephrol 1972; 65:417-20. [PMID: 4561316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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35
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Dutz H, Eckardt D. [Dialysis therapy in acute intoxications]. Z Gesamte Inn Med 1971; 26:183-5. [PMID: 5112881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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36
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Dutz H, Precht K. [Organization of the renal centers in GDR]. Dtsch Gesundheitsw 1971; 26:1099-100. [PMID: 5110704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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37
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Mebel M, Dutz H, May G, Dutz W, Erdmann T, Strangfeld D, Natusch R, Precht K, Scholz D, Buchali K, Buder HW, Briedigkeit H. [Clinical homologous kidney transplantation. Report of 26 cases]. Dtsch Gesundheitsw 1971; 26:1100-5. [PMID: 4938901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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38
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Dutz H, Philipp H. [Immunologic problems of glomerulonephritis]. Z Arztl Fortbild (Jena) 1971; 65:554-60. [PMID: 5570284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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39
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Hagemann I, Dutz H, Krause I, Pietsch R. [Intra- and extracellular electrolyte changes during acute kidney failure in the rat]. Z Gesamte Inn Med 1970; 25:970-974. [PMID: 5523029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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40
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Schmidt H, Heine H, Dutz H, Mach H, Jaruszewski H. [Internal treatment possibilities in peripheral arterial circulation disorders]. Dtsch Gesundheitsw 1970; 25:1542-5. [PMID: 5508200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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41
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Dutz H, Eckardt D, Lachhein L, Althaus P, Gerhardt W, Houda W, Jungmann K, Kallas W, Klimpel L, Klinkmann H, Lemke E, Müller D, Otto U, Precht K, Rohmann E, Thieler H, Tredt HJ, Zenker K. [Therapy of acute exogenous intoxications using hemo- and peritoneal dialysis and results of this treatment in GDR in the years 1959-1968]. Dtsch Gesundheitsw 1970; 25:1437-44. [PMID: 4945430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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42
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Anders G, Dutz H. [The development and organization of the 2d Medizinische Universitätsklinik der Charité, Berlin, in the last 20 years]. Z Arztl Fortbild (Jena) 1969; 63:1320-4. [PMID: 4929747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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43
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Hagemann I, Birnbaum M, Wemmer HD, Ditscherlein G, Briedigkeit H, Dutz H. [Treatment of experimental pyelonephritis in rats with oxytetracycline and prednisolone during a period of 3 weeks]. Z Gesamte Inn Med 1969; 24:911-7. [PMID: 4903942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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44
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Dutz H, Mebel M, Precht K. [Artificial kidney--kidney transplantation]. Dtsch Gesundheitsw 1969; 24:1831-4. [PMID: 4916104] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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45
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Natusch R, Dutz H, Kettler LH. [Significance of intravital morphological diagnosis in the clinical picture of kidney diseases]. Dtsch Gesundheitsw 1968; 23:1385-7. [PMID: 5685934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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46
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Precht K, Dutz H, Buder HW. [On the problems of pyelonephritis]. Dtsch Gesundheitsw 1968; 23:793-7. [PMID: 5679442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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47
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Dutz H, Precht K. [Development, results, and perspectives of the dialysis centers in the German Democratic Republic]. Dtsch Gesundheitsw 1967; 22:1254-6. [PMID: 5595952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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48
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Dutz H, Precht K, Strangfeld D. [Therapy of pyelonephritis]. Z Gesamte Inn Med 1965; 20:Suppl:113-8. [PMID: 5866017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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