Towards a new measurement of the neutron electric dipole moment

被引：3
|
作者：
Ban, G. [1 ]
Bodek, K.
Daum, M.
Henneck, R.
Heule, S.
Kasprzak, M.
Khomytov, N.
Kirch, K.
Knecht, A.
Kistryn, S.
Knowles, P.
Kuzniak, M.
Lefort, T.
Naviliat-Cuncic, O.
Pichlmaier, A.
Plonka, C.
Quemener, G.
Rebetez, M.
Rebreyend, D.
Rogel, G.
Sabirov, B. M.
Tur, M.
Weis, A.
Zejma, J.
机构：
[1] Phys Corpusculaire Lab, Caen, France
[2] Jagiellonian Univ, Krakow, Poland
[3] Joint Nucl Res Inst, Dubna, Russia
[4] Univ Fribourg, CH-1700 Fribourg, Switzerland
[5] Inst Max Von Laue Paul Langevin, F-38042 Grenoble, France
[6] Lab Phys Subatom & Cosmol, Grenoble, France
[7] Paul Scherrer Inst, Villigen, Switzerland
来源：
HYPERFINE INTERACTIONS | 2006年 / 172卷 / 1-3期
关键词：
CP-violation; electric dipole moment; tests of the standard model;
D O I：
10.1007/s10751-007-9522-7
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Precision measurements of particle electric dipole moments (EDMs) provide extremely sensitive means to search for non-standard mechanisms of T (or CP) violation. For the neutron EDM, the upper limit has been reduced by eight orders of magnitude in 50 years thereby excluding several CP violation scenarios. We report here on a new effort aiming at improving the neutron EDM limit by two orders of magnitude, down to a level of 3 x 10(-28) e center dot cm. The two central elements of the approach are the use of the higher densities which will be available at the new dedicated spallation UCN source at the Paul Scherrer Institute, and the optimization of the in-vacuum Ramsey resonance technique, with storage chambers at room temperature, to reach new limits of sensitivity.
引用
收藏
页码：41 / 43
页数：3
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