Detailed discussion of a linear electric field frequency shift induced in confined gases by a magnetic field gradient: Implications for neutron electric-dipole-moment experiments
Detailed discussion of a linear electric field frequency shift induced in confined gases by a magnetic field gradient: Implications for neutron electric-dipole-moment experiments
复制标题
磁场梯度在受限气体中引起的线性电场频移的详细讨论：对中子电偶极矩实验的影响
DOI：
10.1103/physreva.71.032104
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发表时间：
2004
影响因子：
2.9
通讯作者：
R. Golub
中科院分区：
文献类型：
--
作者：
S. Lamoreaux;R. Golub
寻找粒子电偶极矩（EDM）是寻找电弱相互作用标准模型之外的物理学的最佳场所之一，因为标准模型预测的时间反演破坏的大小与目前关于重子-反重子不对称性的产生的想法不相容。随着这些EDM搜索的灵敏度增加，更微妙的系统效应变得重要。我们开发了一种通用的分析方法来描述最近在使用存储粒子的电偶极矩实验中观察到的系统效应[2]。我们的方法是基于系统的频率偏移和共振粒子的速度自相关函数之间的关系。我们的研究结果，当应用到众所周知的相关函数的限制形式，是在最近的工作中，采用了数值/启发式分析研究的限制情况下，在很好的协议。我们的一般方法解释了在这项工作中观察到的一些令人惊讶的结果，并显示了中频偏移的丰富行为，这是以前没有研究过的。在附录中，我们给出了一个新的推导Egelstaf的定理，我们用在我们的研究的扩散理论（低频）的限制的影响。
The search for particle electric dipole moments (EDM) is one of the best places to look for physics beyond the Standard Model of electroweak interaction because the size of time reversal violation predicted by the Standard Model is incompatible with present ideas concerning the creation of the Baryon-Antibaryon asymmetry. As the sensitivity of these EDM searches increases more subtle systematic effects become important. We develop a general analytical approach to describe a systematic effect recently observed in an electric dipole moment experiment using stored particles [2]. Our approach is based on the relationship between the systematic frequency shift and the velocity autocorrelation function of the resonating particles. Our results, when applied to wellknown limiting forms of the correlation function, are in good agreement with both the limiting cases studied in recent work that employed a numerical/heuristic analysis. Our general approach explains some of the surprising results observed in that work and displays the rich behavior of the shift for intermediate frequencies, which has not been studied previously. In an appendix we give a new derivation of Egelstaf’s theorem which we used in our study of the Diffusion theory (low frequency) limit of the effect.