muEDM：用冻结自旋技术寻找PSI的μ子电偶极矩
muEDM: Towards a search for the muon electric dipole moment at PSI using the frozen-spin technique
摘要：
对μ子永久电偶极矩的研究是对粒子物理学标准模型之外物理学的一个很好的探索。我们提出了第一个专门的μ子EDM搜索采用冻结自旋技术在保罗谢勒研究所（PSI），瑞士，与$6 \times 10^{-23}~e\!\cdot\!\mathrm{cm}$的灵敏度，提高了目前的最佳限制设置由E821实验在布鲁克海文国家实验室超过三个数量级。为了准备测量μ子EDM的高精度实验，PSI进行了几项研发研究：表征可能的束线，以主持μ子束注入研究的实验，以及测量正电子跟踪计划开发中低动量下潜在探测器材料中正电子的多次库仑散射。本文讨论了实验的概念和目前的现状muEDM实验在PSI。
英文摘要：
The search for a permanent electric dipole moment (EDM) of the muon is an excellent probe for physics beyond the Standard Model of particle physics. We propose the first dedicated muon EDM search employing the frozen-spin technique at the Paul Scherrer Institute (PSI), Switzerland, with a sensitivity of $6 \times 10^{-23}~e\!\cdot\!\mathrm{cm}$, improving the current best limit set by the E821 experiment at Brookhaven National Laboratory by more than three orders of magnitude. In preparation for a high precision experiment to measure the muon EDM, several R&D studies have been performed at PSI: the characterisation of a possible beamline to host the experiment for the muon beam injection study and the measurement of the multiple Coulomb scattering of positrons in potential detector materials at low momenta for the positron tracking scheme development. This paper discusses experimental concepts and the current status of the muEDM experiment at PSI.
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