1
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Le Joubioux M, Savajols H, Mittig W, Fléchard X, Hayen L, Penionzhkevich YE, Ackermann D, Borcea C, Caceres L, Delahaye P, Didierjean F, Franchoo S, Grillet A, Jacquot B, Lebois M, Ledoux X, Lecesne N, Liénard E, Lukyanov S, Naviliat-Cuncic O, Piot J, Singh A, Smirnov V, Stodel C, Testov D, Thisse D, Thomas JC, Verney D. Search for a Neutron Dark Decay in ^{6}He. Phys Rev Lett 2024; 132:132501. [PMID: 38613302 DOI: 10.1103/physrevlett.132.132501] [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: 08/30/2023] [Revised: 01/31/2024] [Accepted: 02/29/2024] [Indexed: 04/14/2024]
Abstract
Neutron dark decays have been suggested as a solution to the discrepancy between bottle and beam experiments, providing a dark matter candidate that can be searched for in halo nuclei. The free neutron in the final state following the decay of ^{6}He into ^{4}He+n+χ provides an exceptionally clean detection signature when combined with a high efficiency neutron detector. Using a high-intensity ^{6}He^{+} beam at Grand Accélérateur National d'Ions Lourds, a search for a coincident neutron signal resulted in an upper limit on a dark decay branching ratio of Br_{χ}≤4.0×10^{-10} (95% C.L.). Using the dark neutron decay model proposed originally by Fornal and Grinstein, we translate this into an upper bound on a dark neutron branching ratio of O(10^{-5}), improving over global constraints by one to several orders of magnitude depending on m_{χ}.
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Affiliation(s)
- M Le Joubioux
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - H Savajols
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - W Mittig
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
| | - X Fléchard
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - L Hayen
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27607, USA
| | - Yu E Penionzhkevich
- Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna 141980, Russia
- National Research Nuclear University MEPHI, Moscow 115409, Russia
| | - D Ackermann
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - C Borcea
- Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125 Bucharest-Măgurele, Romania
| | - L Caceres
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - P Delahaye
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - F Didierjean
- Institut Pluridisciplinaire Hubert Curien, 23 Rue du Loess, 67200 Strasbourg, France
| | - S Franchoo
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - A Grillet
- Institut Pluridisciplinaire Hubert Curien, 23 Rue du Loess, 67200 Strasbourg, France
| | - B Jacquot
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - M Lebois
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - X Ledoux
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - N Lecesne
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - E Liénard
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - S Lukyanov
- Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - O Naviliat-Cuncic
- Facility for Rare Isotope Beams, Michigan State University, East Lansing, Michigan 48824, USA
- Department of Physics and Astronomy, Michigan State University, East Lansing, Michigan 48824, USA
- Université de Caen Normandie, ENSICAEN, CNRS/IN2P3, LPC Caen UMR6534, F-14000 Caen, France
| | - J Piot
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - A Singh
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - V Smirnov
- Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna 141980, Russia
| | - C Stodel
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - D Testov
- Extreme Light Infrastructure-Nuclear Physics (ELI-NP)/Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH), Strada Reactorului 30, 077125 Bucharest-Măgurele, Romania
- Joint Institute for Nuclear Research, Joliot-Curie 6, 141980 Dubna, Moscow region, Russia
| | - D Thisse
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
| | - J C Thomas
- Grand Accélérateur National d'Ions Lourds (GANIL), CEA/DRF-CNRS/IN2P3, Boulevard Henri Becquerel, 14076 Caen, France
| | - D Verney
- Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France
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2
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Byron W, Harrington H, Taylor RJ, DeGraw W, Buzinsky N, Dodson B, Fertl M, García A, Garvey G, Graner B, Guigue M, Hayen L, Huyan X, Khaw KS, Knutsen K, McClain D, Melconian D, Müller P, Novitski E, Oblath NS, Robertson RGH, Rybka G, Savard G, Smith E, Stancil DD, Sternberg M, Storm DW, Swanson HE, Tedeschi JR, VanDevender BA, Wietfeldt FE, Young AR, Zhu X. First Observation of Cyclotron Radiation from MeV-Scale e^{±} following Nuclear β Decay. Phys Rev Lett 2023; 131:082502. [PMID: 37683153 DOI: 10.1103/physrevlett.131.082502] [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: 09/02/2022] [Revised: 05/03/2023] [Accepted: 07/12/2023] [Indexed: 09/10/2023]
Abstract
We present an apparatus for detection of cyclotron radiation yielding a frequency-based β^{±} kinetic energy determination in the 5 keV to 2.1 MeV range, characteristic of nuclear β decays. The cyclotron frequency of the radiating β particles in a magnetic field is used to determine the β energy precisely. Our work establishes the foundation to apply the cyclotron radiation emission spectroscopy (CRES) technique, developed by the Project 8 Collaboration, far beyond the 18-keV tritium endpoint region. We report initial measurements of β^{-}'s from ^{6}He and β^{+}'s from ^{19}Ne decays to demonstrate the broadband response of our detection system and assess potential systematic uncertainties for β spectroscopy over the full (MeV) energy range. To our knowledge, this is the first direct observation of cyclotron radiation from individual highly relativistic β's in a waveguide. This work establishes the application of CRES to a variety of nuclei, opening its reach to searches for new physics beyond the TeV scale via precision β-decay measurements.
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Affiliation(s)
- W Byron
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - H Harrington
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - R J Taylor
- Physics Department, North Carolina State University, Raleigh, North Carolina 27695, USA
- The Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - W DeGraw
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - N Buzinsky
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - B Dodson
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - M Fertl
- Institute for Physics, Johannes-Gutenberg University Mainz, 55128 Mainz, Germany
| | - A García
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - G Garvey
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - B Graner
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - M Guigue
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - L Hayen
- Physics Department, North Carolina State University, Raleigh, North Carolina 27695, USA
- The Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - X Huyan
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - K S Khaw
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - K Knutsen
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - D McClain
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - D Melconian
- Department of Physics and Astronomy, Texas A&M University, College Station, Texas 77843, USA
- Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA
| | - P Müller
- Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
| | - E Novitski
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - N S Oblath
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - R G H Robertson
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - G Rybka
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - G Savard
- Physics Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA
| | - E Smith
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - D D Stancil
- Department of Electrical and Computer Engineering, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - M Sternberg
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - D W Storm
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - H E Swanson
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
| | - J R Tedeschi
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - B A VanDevender
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Pacific Northwest National Laboratory, Richland, Washington 99352, USA
| | - F E Wietfeldt
- Department of Physics and Engineering Physics, Tulane University, New Orleans, Louisiana 70118, USA
| | - A R Young
- Physics Department, North Carolina State University, Raleigh, North Carolina 27695, USA
- The Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - X Zhu
- Department of Physics, University of Washington, Seattle, Washington 98195, USA
- Center for Nuclear Physics and Astrophysics, University of Washington, Seattle, Washington 98195, USA
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3
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Gonzalez FM, Fries EM, Cude-Woods C, Bailey T, Blatnik M, Broussard LJ, Callahan NB, Choi JH, Clayton SM, Currie SA, Dawid M, Dees EB, Filippone BW, Fox W, Geltenbort P, George E, Hayen L, Hickerson KP, Hoffbauer MA, Hoffman K, Holley AT, Ito TM, Komives A, Liu CY, Makela M, Morris CL, Musedinovic R, O'Shaughnessy C, Pattie RW, Ramsey J, Salvat DJ, Saunders A, Sharapov EI, Slutsky S, Su V, Sun X, Swank C, Tang Z, Uhrich W, Vanderwerp J, Walstrom P, Wang Z, Wei W, Young AR. Improved Neutron Lifetime Measurement with UCNτ. Phys Rev Lett 2021; 127:162501. [PMID: 34723594 DOI: 10.1103/physrevlett.127.162501] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 07/20/2021] [Indexed: 06/13/2023]
Abstract
We report an improved measurement of the free neutron lifetime τ_{n} using the UCNτ apparatus at the Los Alamos Neutron Science Center. We count a total of approximately 38×10^{6} surviving ultracold neutrons (UCNs) after storing in UCNτ's magnetogravitational trap over two data acquisition campaigns in 2017 and 2018. We extract τ_{n} from three blinded, independent analyses by both pairing long and short storage time runs to find a set of replicate τ_{n} measurements and by performing a global likelihood fit to all data while self-consistently incorporating the β-decay lifetime. Both techniques achieve consistent results and find a value τ_{n}=877.75±0.28_{stat}+0.22/-0.16_{syst} s. With this sensitivity, neutron lifetime experiments now directly address the impact of recent refinements in our understanding of the standard model for neutron decay.
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Affiliation(s)
- F M Gonzalez
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - E M Fries
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - C Cude-Woods
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - T Bailey
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - M Blatnik
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - L J Broussard
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - N B Callahan
- Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - J H Choi
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - S M Clayton
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - S A Currie
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - M Dawid
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - E B Dees
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - B W Filippone
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - W Fox
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - P Geltenbort
- Institut Laue-Langevin, CS 20156, 38042 Grenoble Cedex 9, France
| | - E George
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - L Hayen
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - K P Hickerson
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - M A Hoffbauer
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - K Hoffman
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - A T Holley
- Tennessee Technological University, Cookeville, Tennessee 38505, USA
| | - T M Ito
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - A Komives
- DePauw University, Greencastle, Indiana 46135, USA
| | - C-Y Liu
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - M Makela
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - C L Morris
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R Musedinovic
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
| | - C O'Shaughnessy
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - R W Pattie
- East Tennessee State University, Johnson City, Tennessee 37614, USA
| | - J Ramsey
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - D J Salvat
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - A Saunders
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - E I Sharapov
- Joint Institute for Nuclear Research, 141980 Dubna, Russia
| | - S Slutsky
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - V Su
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - X Sun
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - C Swank
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - Z Tang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - W Uhrich
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - J Vanderwerp
- Department of Physics, Indiana University, Bloomington, Indiana 47405, USA
- Center for Exploration of Energy and Matter, Indiana University, Bloomington, Indiana 47405, USA
| | - P Walstrom
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - Z Wang
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - W Wei
- Kellogg Radiation Laboratory, California Institute of Technology, Pasadena, California 91125, USA
| | - A R Young
- Department of Physics, North Carolina State University, Raleigh, North Carolina 27695, USA
- Triangle Universities Nuclear Laboratory, Durham, North Carolina 27708, USA
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4
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Abel C, Afach S, Ayres NJ, Baker CA, Ban G, Bison G, Bodek K, Bondar V, Burghoff M, Chanel E, Chowdhuri Z, Chiu PJ, Clement B, Crawford CB, Daum M, Emmenegger S, Ferraris-Bouchez L, Fertl M, Flaux P, Franke B, Fratangelo A, Geltenbort P, Green K, Griffith WC, van der Grinten M, Grujić ZD, Harris PG, Hayen L, Heil W, Henneck R, Hélaine V, Hild N, Hodge Z, Horras M, Iaydjiev P, Ivanov SN, Kasprzak M, Kermaidic Y, Kirch K, Knecht A, Knowles P, Koch HC, Koss PA, Komposch S, Kozela A, Kraft A, Krempel J, Kuźniak M, Lauss B, Lefort T, Lemière Y, Leredde A, Mohanmurthy P, Mtchedlishvili A, Musgrave M, Naviliat-Cuncic O, Pais D, Piegsa FM, Pierre E, Pignol G, Plonka-Spehr C, Prashanth PN, Quéméner G, Rawlik M, Rebreyend D, Rienäcker I, Ries D, Roccia S, Rogel G, Rozpedzik D, Schnabel A, Schmidt-Wellenburg P, Severijns N, Shiers D, Tavakoli Dinani R, Thorne JA, Virot R, Voigt J, Weis A, Wursten E, Wyszynski G, Zejma J, Zenner J, Zsigmond G. Measurement of the Permanent Electric Dipole Moment of the Neutron. Phys Rev Lett 2020; 124:081803. [PMID: 32167372 DOI: 10.1103/physrevlett.124.081803] [Citation(s) in RCA: 46] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 02/03/2020] [Indexed: 06/10/2023]
Abstract
We present the result of an experiment to measure the electric dipole moment (EDM) of the neutron at the Paul Scherrer Institute using Ramsey's method of separated oscillating magnetic fields with ultracold neutrons. Our measurement stands in the long history of EDM experiments probing physics violating time-reversal invariance. The salient features of this experiment were the use of a ^{199}Hg comagnetometer and an array of optically pumped cesium vapor magnetometers to cancel and correct for magnetic-field changes. The statistical analysis was performed on blinded datasets by two separate groups, while the estimation of systematic effects profited from an unprecedented knowledge of the magnetic field. The measured value of the neutron EDM is d_{n}=(0.0±1.1_{stat}±0.2_{sys})×10^{-26} e.cm.
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Affiliation(s)
- C Abel
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - S Afach
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - N J Ayres
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - C A Baker
- STFC Rutherford Appleton Laboratory, Harwell, Didcot, Oxon OX11 0QX, United Kingdom
| | - G Ban
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - G Bison
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - K Bodek
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - V Bondar
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - M Burghoff
- Physikalisch Technische Bundesanstalt, D-10587 Berlin, Germany
| | - E Chanel
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - Z Chowdhuri
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - P-J Chiu
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - B Clement
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - C B Crawford
- University of Kentucky, 40506 Lexington, Kentucky, USA
| | - M Daum
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - S Emmenegger
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - L Ferraris-Bouchez
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - M Fertl
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
- Institute of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - P Flaux
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - B Franke
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A Fratangelo
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - P Geltenbort
- Institut Laue-Langevin, CS 20156 F-38042 Grenoble Cedex 9, France
| | - K Green
- STFC Rutherford Appleton Laboratory, Harwell, Didcot, Oxon OX11 0QX, United Kingdom
| | - W C Griffith
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - M van der Grinten
- STFC Rutherford Appleton Laboratory, Harwell, Didcot, Oxon OX11 0QX, United Kingdom
| | - Z D Grujić
- Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
- Institute of Physics Belgrade, University of Belgrade, 11080 Belgrade, Serbia
| | - P G Harris
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - L Hayen
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - W Heil
- Institute of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - R Henneck
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - V Hélaine
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - N Hild
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - Z Hodge
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - M Horras
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - P Iaydjiev
- STFC Rutherford Appleton Laboratory, Harwell, Didcot, Oxon OX11 0QX, United Kingdom
| | - S N Ivanov
- STFC Rutherford Appleton Laboratory, Harwell, Didcot, Oxon OX11 0QX, United Kingdom
| | - M Kasprzak
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
- Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - Y Kermaidic
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - K Kirch
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A Knecht
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - P Knowles
- Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - H-C Koch
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- Institute of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
- Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - P A Koss
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - S Komposch
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - A Kozela
- Henryk Niedwodniczanski Institute for Nuclear Physics, 31-342 Cracow, Poland
| | - A Kraft
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- Institute of Physics, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - J Krempel
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - M Kuźniak
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - B Lauss
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
| | - T Lefort
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - Y Lemière
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - A Leredde
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - P Mohanmurthy
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | | | - M Musgrave
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - O Naviliat-Cuncic
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - D Pais
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - F M Piegsa
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - E Pierre
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - G Pignol
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - C Plonka-Spehr
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - P N Prashanth
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - G Quéméner
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - M Rawlik
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - D Rebreyend
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - I Rienäcker
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
| | - D Ries
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - S Roccia
- Institut Laue-Langevin, CS 20156 F-38042 Grenoble Cedex 9, France
- CSNSM, Université Paris Sud, CNRS/IN2P3, F-91405 Orsay Campus, France
| | - G Rogel
- LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3, 14000 Caen, France
| | - D Rozpedzik
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - A Schnabel
- Physikalisch Technische Bundesanstalt, D-10587 Berlin, Germany
| | | | - N Severijns
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - D Shiers
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
| | - R Tavakoli Dinani
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - J A Thorne
- Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
- Laboratory for High Energy Physics and Albert Einstein Center for Fundamental Physics, University of Bern, CH-3012 Bern, Switzerland
| | - R Virot
- Université Grenoble Alpes, CNRS, Grenoble INP, LPSC-IN2P3, 38026 Grenoble, France
| | - J Voigt
- Physikalisch Technische Bundesanstalt, D-10587 Berlin, Germany
| | - A Weis
- Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
| | - E Wursten
- Instituut voor Kern- en Stralingsfysica, University of Leuven, B-3001 Leuven, Belgium
| | - G Wyszynski
- ETH Zürich, Institute for Particle Physics and Astrophysics, CH-8093 Zürich, Switzerland
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - J Zejma
- Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
| | - J Zenner
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
- Department of Chemistry - TRIGA site, Johannes Gutenberg University Mainz, 55128 Mainz, Germany
| | - G Zsigmond
- Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
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Afach S, Ban G, Bison G, Bodek K, Chowdhuri Z, Grujić ZD, Hayen L, Hélaine V, Kasprzak M, Kirch K, Knowles P, Koch HC, Komposch S, Kozela A, Krempel J, Lauss B, Lefort T, Lemière Y, Mtchedlishvili A, Naviliat-Cuncic O, Piegsa FM, Prashanth PN, Quéméner G, Rawlik M, Ries D, Roccia S, Rozpedzik D, Schmidt-Wellenburg P, Severjins N, Weis A, Wursten E, Wyszynski G, Zejma J, Zsigmond G. Highly stable atomic vector magnetometer based on free spin precession. Opt Express 2015; 23:22108-22115. [PMID: 26368184 DOI: 10.1364/oe.23.022108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We present a magnetometer based on optically pumped Cs atoms that measures the magnitude and direction of a 1 μT magnetic field. Multiple circularly polarized laser beams were used to probe the free spin precession of the Cs atoms. The design was optimized for long-time stability and achieves a scalar resolution better than 300 fT for integration times ranging from 80 ms to 1000 s. The best scalar resolution of less than 80 fT was reached with integration times of 1.6 to 6 s. We were able to measure the magnetic field direction with a resolution better than 10 μrad for integration times from 10 s up to 2000 s.
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6
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Baker CJ, Melish ME, Hall RT, Casto DT, Vasan U, Givner LB, Garcia- Prats JA, Rench MA, Hesketh D, Brown M, Pelke S, Hayen L, Kurth G, Meade V, Ramamurthy R, Driscoll MS, Drummond M, Pollock B, Sutherland V. Intravenous immune globulin for the prevention of nosocomial infection in low-birth-weight neonates. Int J Gynaecol Obstet 1993. [DOI: 10.1016/0020-7292(93)90893-2] [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: 10/26/2022]
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