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The search for the neutron electric dipole moment at the Paul Scherrer Institute

  • Baker, C. A. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom
  • Ban, G. LPC Caen, Universit́e de Caen, France
  • Bodek, K. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Burghoff, M. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Chowdhuri, Z. Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Daum, M. Excellence Cluster ‘Universe’, Technische Universiät München, Garching, Germany - Paul Scherrer Institute, Villigen-PSI, Switzerland - Physics Departement, University of Virginia, Charlottesville, USA
  • Fertl, M. Paul Scherrer Institute, Villigen-PSI, Switzerland - ETH Z̈urich, Switzerland
  • Franke, B. Excellence Cluster ‘Universe’, Technische Universiät München, Garching, Germany - Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Geltenbort, P. Institut Laue–Langevin, Grenoble Cedex, France
  • Green, K. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom - Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Grinten, M. G. D. van der Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom - Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Gutsmiedl, E. Technische Universität Müchen, Garching, Germany
  • Harris, P. G. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Henneck, R. Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Iaydjiev, P. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom
  • Ivanov, S. N. Rutherford Appleton Laboratory, Chilton, Didcot, Oxon, United Kingdom
  • Khomutov, N. JINR, 141980 Dubna, Moscow region, Russia
  • Kasprzak, Malgorzata Physics Department, University of Fribourg, Switzerland
  • Kirch, K. Paul Scherrer Institute, Villigen-PSI, Switzerland - ETH Z̈urich, Switzerland
  • Kistryn, S. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Knappe-Grüneberg, S. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Knecht, A. Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Knowles, Paul E. Physics Department, University of Fribourg, Switzerland
  • Kozela, A. Henryk Niedwodniczánski Institute for Nuclear Physics, Cracow, Poland
  • Lauss, B. Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Lefort, T. LPC Caen, Universit́e de Caen, France
  • Lemière, Y. LPC Caen, Universit́e de Caen, France
  • Naviliat-Cuncic, O. LPC Caen, Universit́e de Caen, France - Michigan State University, East-Lansing, USA
  • Pendlebury, J. M. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Pierre, E. LPC Caen, Universit́e de Caen, France - Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Piegsa, F. M. ETH Z̈urich, Switzerland
  • Pignol, G. LPSC, Universit́e Joseph Fourier Grenoble, France
  • Quéméner, G. LPC Caen, Universit́e de Caen, France
  • Roccia, S. Instituut voor Kern– en Stralingsfysica, Katholieke Universiteit Leuven, Belgium
  • Schmidt-Wellenburg, P. Paul Scherrer Institute, Villigen-PSI, Switzerland
  • Shiers, D. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Smith, K. F. Department of Physics and Astronomy, University of Sussex, Falmer, Brighton, United Kingdom
  • Schnabel, A. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Trahms, L. Physikalisch Technische Bundesanstalt, Berlin, Germany
  • Weis, Antoine Physics Department, University of Fribourg, Switzerland
  • Zejma, J. Marian Smoluchowski Institute of Physics, Jagiellonian University, Cracow, Poland
  • Zenner, J. Paul Scherrer Institute, Villigen-PSI, Switzerland - Institut für Kernchemie, Johannes–Gutenberg–Universität, Mainz, Germany
  • Zsigmond, G. Paul Scherrer Institute, Villigen-PSI, Switzerland
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    03.08.2011
Published in:
  • Physics Procedia. - 2011, vol. 17, p. 159-167
English The measurement of the neutron electric dipole moment (nEDM) constrains the contribution of CP-violating terms within both the Standard Model and its extensions. The experiment uses ultracold neutrons (UCN) stored in vacuum at room temperature. This technique provided the last (and best) limit by the RAL/Sussex/ILL collaboration in 2006: dn < 2:9 × 10⁻²⁶ e cm (90% C.L.). We aim to improve the experimental sensitivity by a factor of 5 within 2-3 years, using an upgrade of the same apparatus. We will take advantage of the increased ultracold neutron density at the Paul Scherrer Institute (PSI) and of a new concept including both, external magnetometers and a cohabiting magnetometer. In parallel, a next generation apparatus with two UCN storage chambers and an elaborate magnetic field control is being designed aiming to achieve another order of magnitude increase in sensitivity, allowing us to put a limit as tight as dn < 5 × 10⁻²⁸ e cm (95% C.L.), if not establishing a finite value.
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/302085
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