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Constraining interactions mediated by axion-like particles with ultracold neutrons

  • Afach, S. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland - Hans Berger Department of Neurology, Jena University Hospital, Jena, Germany
  • Ban, Gert LP C Caen, ENSICAEN, Université de Caen, France
  • Bison, Georg Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Bodek, K. Marian Smoluchowski Institute of Physics, Jagiellonian University, Poland
  • Burghoff, M. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Daum, M. Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Fertl, M. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Franke, B. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Grujić, Zoran D. Physics Department, University of Fribourg, Switzerland
  • Hélaine, V. Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland - LP C Caen, ENSICAEN, Université de Caen, France
  • Kasprzak, Malgorzata Physics Department, University of Fribourg, Switzerland
  • Kermaïdic, Y. LPSC, Université Grenoble Alpes, Grenoble, France
  • Kirch, K. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Knowles, Paul E. Physics Department, University of Fribourg, Switzerland
  • Koch, Hans-Christian Physics Department, University of Fribourg, Switzerland - I nstitut für Physik, Johannes–Gutenberg–Universität, Mainz, Germany
  • Komposch, S. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Kozela, A. Henryk Niedwodniczański Institute for Nuclear Physics, Cracow, Poland
  • Krempel, J. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Lauss, B. Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Lefort, T. LP C Caen, ENSICAEN, Université de Caen, France
  • Lemière, Y. LP C Caen, ENSICAEN, Université de Caen, France
  • Mtchedlishvili, A. Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Naviliat-Cuncic, O. LP C Caen, ENSICAEN, Université de Caen, France
  • Piegsa, F. M. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Pignol, G. LPSC, Université Grenoble Alpes, Grenoble, France
  • Prashanth, P. N. Instituut voor Kern–en Stralingsfysica, University of Leuven, Belgium
  • Quéméner, G. LP C Caen, ENSICAEN, Université de Caen, France
  • Rebreyend, D. LPSC, Université Grenoble Alpes, Grenoble, France
  • Ries, D. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Roccia, S. CSNSM, Université Paris Sud, Orsay Campus, France
  • Schmidt-Wellenburg, P. Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
  • Schnabel, A. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Severijns, N. Instituut voor Kern–en Stralingsfysica, University of Leuven, Belgium
  • Voigt, J. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Weis, Antoine Physics Department, University of Fribourg, Switzerland
  • Wyszynski, G. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland - Marian Smoluchowski Institute of Physics, Jagiellonian University, Poland
  • Zejma, J. Marian Smoluchowski Institute of Physics, Jagiellonian University, Poland
  • Zenner, J. ETH Zürich, Institute for Particle Physics, Zürich, Switzerland
  • Zsigmond, G. Paul Scherrer Institute (PSI), Villigen-PSI, Switzerland
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    18.05.2015
Published in:
  • Physics Letters B. - 2015, vol. 745, p. 58–63
CP violation
Short range spin dependent interaction
Axion
Axion like particle
Ultracold neutrons
Neutron electric dipole moment
English We report a new limit on a possible short range spin-dependent interaction from the precise measurement of the ratio of Larmor precession frequencies of stored ultracold neutrons and Hg199 atoms confined in the same volume. The measurement was performed in a ∼1μT vertical magnetic holding field with the apparatus searching for a permanent electric dipole moment of the neutron at the Paul Scherrer Institute. A possible coupling between freely precessing polarized neutron spins and unpolarized nucleons of the wall material can be investigated by searching for a tiny change of the precession frequencies of neutron and mercury spins. Such a frequency change can be interpreted as a consequence of a short range spin-dependent interaction that could possibly be mediated by axions or axion-like particles. The interaction strength is proportional to the CP violating product of scalar and pseudoscalar coupling constants gSgP. Our result confirms limits from complementary experiments with spin-polarized nuclei in a model-independent way. Limits from other neutron experiments are improved by up to two orders of magnitude in the interaction range of 10−6<λ<10−4m.
Faculty
Faculté des sciences et de médecine
Department
Département de Physique
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/304321
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