Measurement of the Permanent Electric Dipole Moment of the Neutron

被引：371

作者：

Abel, C. ^{[1
]}

Afach, S. ^{[2
,3
]}

Ayres, N. J. ^{[1
,3
]}

Baker, C. A. ^{[4
]}

Ban, G. ^{[5
]}

Bison, G. ^{[2
]}

Bodek, K. ^{[6
]}

Bondar, V. ^{[2
,3
,7
]}

Burghoff, M. ^{[8
]}

Chanel, E. ^{[9
,10
]}

Chowdhuri, Z. ^{[2
]}

Chiu, P. -J. ^{[2
,3
]}

Clement, B. ^{[11
]}

Crawford, C. B. ^{[12
]}

Daum, M. ^{[2
]}

Emmenegger, S. ^{[3
]}

Ferraris-Bouchez, L. ^{[11
]}

Fertl, M. ^{[2
,3
,13
]}

Flaux, P. ^{[5
]}

Franke, B. ^{[2
,3
,20
]}

Fratangelo, A. ^{[9
,10
]}

Geltenbort, P. ^{[14
]}

Green, K. ^{[4
]}

Griffith, W. C. ^{[1
]}

van der Grinten, M. ^{[4
]}

Grujic, Z. D. ^{[15
,16
]}

Harris, P. G. ^{[1
]}

Hayen, L. ^{[7
,21
]}

Heil, W. ^{[13
]}

Henneck, R. ^{[2
]}

Helaine, V. ^{[2
,5
]}

Hild, N. ^{[2
,3
]}

Hodge, Z. ^{[9
,10
]}

Horras, M. ^{[2
,3
]}

Iaydjiev, P. ^{[4
]}

Ivanov, S. N. ^{[4
]}

Kasprzak, M. ^{[2
,7
,15
]}

Kermaidic, Y. ^{[11
,22
]}

Kirch, K. ^{[2
,3
]}

Knecht, A. ^{[2
,3
]}

Knowles, P. ^{[15
]}

Koch, H. -C. ^{[2
,13
,15
]}

Koss, P. A. ^{[7
,23
]}

Komposch, S. ^{[2
,3
]}

Kozela, A. ^{[17
]}

Kraft, A. ^{[2
,13
]}

Krempel, J. ^{[3
]}

Kuzniak, M. ^{[2
,6
,24
]}

Lauss, B. ^{[2
]}

Lefort, T. ^{[5
]}

机构：

[1] Univ Sussex, Dept Phys & Astron, Brighton BN1 9QH, E Sussex, England

[2] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[3] Swiss Fed Inst Technol, Inst Particle Phys & Astrophys, CH-8093 Zurich, Switzerland

[4] Rutherford Appleton Lab, STFC, Didcot OX11 0QX, Oxon, England

[5] Univ Caen, ENSICAEN, LPC Caen, CNRS,IN2P3, F-14000 Caen, France

[6] Jagiellonian Univ, Marian Smoluchowski Inst Phys, PL-30348 Krakow, Poland

[7] Univ Leuven, Inst Kern Stralingsfys, B-3001 Leuven, Belgium

[8] Phys Tech Bundesanstalt, D-10587 Berlin, Germany

[9] Univ Bern, High Energy Phys Lab, CH-3012 Bern, Switzerland

[10] Univ Bern, Albert Einstein Ctr Fundamental Phys, CH-3012 Bern, Switzerland

[11] Univ Grenoble Alpes, CNRS, Grenoble INP, LPSC IN2P3, F-38026 Grenoble, France

[12] Univ Kentucky, Lexington, KY 40506 USA

[13] Johannes Gutenberg Univ Mainz, Inst Phys, D-55128 Mainz, Germany

[14] Inst Laue Langevin, CS 20156, F-38042 Grenoble 9, France

[15] Univ Fribourg, Dept Phys, CH-1700 Fribourg, Switzerland

[16] Univ Belgrade, Inst Phys Belgrade, Belgrade 11080, Serbia

[17] Henryk Niewodniczanski Inst Nucl Phys, PL-31342 Krakow, Poland

[18] Johannes Gutenberg Univ Mainz, Dept Chem, TRIGA Site, D-55128 Mainz, Germany

[19] Univ Paris Sud, CNRS, CSNSM, IN2P3, F-91405 Orsay, France

[20] TRIUMF, Vancouver, BC, Canada

[21] North Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

[22] Max Planck Inst Kernphys, Heidelberg, Germany

[23] Fraunhofer Inst Phys Messtech IPM, D-79110 Freiburg, Germany

[24] Polish Acad Sci, AstroCeNT, Nicolaus Copernicus Astron Ctr, Rektorska 4, Warsaw, Poland

[25] MIT, Boston, MA USA

[26] Sorbonne Univ, LPTMC, Paris, France

[27] CEA Saclay, Saclay, France

[28] CERN, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW LETTERS | 2020年 / 124卷 / 08期

基金：

瑞士国家科学基金会; 芬兰科学院; 欧洲研究理事会;

关键词：

Magnetic field effects - Dipole moment - Neutrons;

D O I：

10.1103/PhysRevLett.124.081803

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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 Hg-199 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)) x 10(-26) e.cm.

引用

页数：7

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