Revised experimental upper limit on the electric dipole moment of the neutron
Revised experimental upper limit on the electric dipole moment of the neutron
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DOI：
10.1103/physrevd.92.092003
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发表时间：
2015-11-04
影响因子：
5
通讯作者：
Zsigmond, G.
中科院分区：
文献类型：
--
作者：
Pendlebury, J. M.;Afach, S.;Zsigmond, G.
我们第一次提出了一个详细和全面的分析的实验结果，设置当前世界的灵敏度限制的大小的电偶极矩（EDM）的中子。我们已经扩展和增强了我们以前的分析，包括最近的发展，在去极化超冷中子的重力的影响的理解;改进的中子谱的计算;和保守估计的其他可能的系统误差，这也被证明是与最近的测量与设备进行一致。我们得到的净结果为d（n）= -0.21 +/-1.82 × 10（-26）e cm，这可以解释为对EDM震级的上限3.0 × 10（-26）e cm（90% C.L.）或3.6 × 10 ~（-26）e cm（95%C. L.）。
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 +/- 1.82 x 10(-26) e cm, which may be interpreted as a slightly revised upper limit on the magnitude of the EDM of 3.0 x 10(-26) e cm (90% C.L.) or 3.6 x 10(-26) e cm (95% C. L.).