Revised experimental upper limit on the electric dipole moment of the neutron

J. M. Pendlebury; S. Afach; N. J. Ayres; C. A. Baker; G. Ban; G. Bison; K. Bodek; M. Burghoff; P. Geltenbort; K. Green; W. C. Griffith; M. van der Grinten; Z. D. Grujić; P. G. Harris; V. Hélaine; P. Iaydjiev; S. N. Ivanov; M. Kasprzak; Y. Kermaidic; K. Kirch; H.-C. Koch; S. Komposch; A. Kozela; J. Krempel; B. Lauss; T. Lefort; Y. Lemière; D. J. R. May; M. Musgrave; O. Naviliat-Cuncic; F. M. Piegsa; G. Pignol; P. N. Prashanth; G. Quéméner; M. Rawlik; D. Rebreyend; J. D. Richardson; D. Ries; S. Roccia; D. Rozpedzik; A. Schnabel; P. Schmidt-Wellenburg; N. Severijns; D. Shiers; J. A. Thorne; A. Weis; O. J. Winston; E. Wursten; J. Zejma; G. Zsigmond

doi:10.1103/PhysRevD.92.092003

Revised experimental upper limit on the electric dipole moment of the neutron

J. M. Pendlebury^1,*, S. Afach^2,3,4, N. J. Ayres¹, C. A. Baker⁵, G. Ban⁶, G. Bison², K. Bodek⁷, M. Burghoff⁸, P. Geltenbort⁹ et al.

K. Green⁵, W. C. Griffith¹, M. van der Grinten⁵, Z. D. Grujić¹⁰, P. G. Harris^1,†, V. Hélaine^6,‡, P. Iaydjiev^5,§, S. N. Ivanov^5,¶, M. Kasprzak^10,11, Y. Kermaidic¹², K. Kirch^2,3, H.-C. Koch^10,13, S. Komposch^2,3, A. Kozela¹⁴, J. Krempel^3,2, B. Lauss², T. Lefort⁶, Y. Lemière⁶, D. J. R. May¹, M. Musgrave¹, O. Naviliat-Cuncic^6,**, F. M. Piegsa³, G. Pignol¹², P. N. Prashanth¹¹, G. Quéméner⁶, M. Rawlik³, D. Rebreyend¹², J. D. Richardson¹, D. Ries^2,3, S. Roccia¹⁵, D. Rozpedzik⁷, A. Schnabel⁸, P. Schmidt-Wellenburg², N. Severijns¹¹, D. Shiers¹, J. A. Thorne¹, A. Weis¹⁰, O. J. Winston¹, E. Wursten¹¹, J. Zejma⁷, and G. Zsigmond²

¹Department of Physics and Astronomy, University of Sussex, Falmer, Brighton BN1 9QH, United Kingdom
²Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
³ETH Zürich, Institute for Particle Physics, CH-8093 Zürich, Switzerland
⁴Hans Berger Department of Neurology, Jena University Hospital, D-07747 Jena, Germany
⁵STFC Rutherford Appleton Laboratory, Harwell, Didcot, Oxon OX11 0QX, United Kingdom
⁶LPC Caen, ENSICAEN, Université de Caen, CNRS/IN2P3 Caen, 6 bd Maréchal Juin, F-14050 Caen Cedex, France
⁷Marian Smoluchowski Institute of Physics, Jagiellonian University, 30-348 Cracow, Poland
⁸Physikalisch Technische Bundesanstalt, D-10587 Berlin, Germany
⁹Institut Laue-Langevin, CS 20156 F-38042 Grenoble Cedex 9, France
¹⁰Physics Department, University of Fribourg, CH-1700 Fribourg, Switzerland
¹¹Instituut voor Kern en Stralingsfysica, Katholieke Universiteit Leuven, B-3001 Leuven, Belgium
¹²LPSC, Université Grenoble Alpes, CNRS/IN2P3, 53 rue des Martyrs, F-38000 Grenoble, France
¹³Institut für Physik, Johannes-Gutenberg-Universität, D-55128 Mainz, Germany
¹⁴Henryk Niedwodniczański Institute for Nuclear Physics, Cracow, Ul. Radzikowskiego 152 31-342 Kraków, Poland
¹⁵CSNSM, Université Paris Sud, CNRS/IN2P3, Orsay, France

^*Deceased.
^†Corresponding author. p.g.harris@sussex.ac.uk.
^‡Present address: LPSC, Université Grenoble Alpes, CNRS/IN2P3, Grenoble, France.
^§On leave from Institute of Nuclear Research and Nuclear Energy, Sofia, Bulgaria.
^¶On leave from Petersburg Nuclear Physics Institute, Russia.
^**Also at Michigan State University, East Lansing, USA.

PDF

Phys. Rev. D 92, 092003 – Published 4 November, 2015

DOI: https://doi.org/10.1103/PhysRevD.92.092003

Abstract

We present for the first time a detailed and comprehensive analysis of the experimental results that set the current world sensitivity limit on the magnitude of the electric dipole moment (EDM) of the neutron. We have extended and enhanced our earlier analysis to include recent developments in the understanding of the effects of gravity in depolarizing ultracold neutrons; an improved calculation of the spectrum of the neutrons; and conservative estimates of other possible systematic errors, which are also shown to be consistent with more recent measurements undertaken with the apparatus. We obtain a net result of $d_{n} = - 0.21 \pm 1.82 \times 1 0^{- 26} e cm$ , which may be interpreted as a slightly revised upper limit on the magnitude of the EDM of $3.0 \times 1 0^{- 26} e cm$ (90% C.L.) or $3.6 \times 1 0^{- 26} e cm$ (95% C.L.).

Authorization Required

We need you to provide your credentials before accessing this content.

Physical Review D

Revised experimental upper limit on the electric dipole moment of the neutron

Abstract

Authorization Required

Other Options

References (Subscription Required)

Outline

Information

Filter

Filter

Article Lookup

Enter a citation

Revised experimental upper limit on the electric dipole moment of the neutron

Abstract

Authorization Required

Log in via your institution

Log in via APS Member Subscription

Other Options

References (Subscription Required)