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arXiv 2102.08838hep-exphysics.ins-det
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用冻结自旋技术寻找μ介子EDM

Search for a muon EDM using the frozen-spin technique

A. Adelmann, M. Backhaus, C. Chavez Barajas, N. Berger, T. Bowcock, C. Calzolaio, G. Cavoto, R. Chislett, A. Crivellin, M. Daum, M. Fertl, M. Giovannozzi, G. He… 展开作者

A. Adelmann, M. Backhaus, C. Chavez Barajas, N. Berger, T. Bowcock, C. Calzolaio, G. Cavoto, R. Chislett, A. Crivellin, M. Daum, M. Fertl, M. Giovannozzi, G. Hesketh, M. Hildebrandt, I. Keshelashvili, A. Keshavarzi, K. S. Khaw, K. Kirch, A. Kozlinskiy, A. Knecht, M. Lancaster, B. Märkisch, F. Meier Aeschbacher, F. Méot, A. Nass, A. Papa, J. Pretz, J. Price, F. Rathmann, F. Renga, M. Sakurai, P. Schmidt-Wellenburg, A. Schöning, M. Schott, C. Voena, J. Vossebeld, F. Wauters, P. Winter

摘要:

这份意向书提出了一个实验,以寻找一个电偶极矩的μ子的基础上冻结自旋技术。我们打算利用高电场,$E=1{\rm GV/m}$,经历了在休息框架的μ子与$p=125 {\rm MeV/}c$的动量时,通过一个大磁场$|\vec{B}|=3{\rm T}$。在$μ$ E1束线处的电流μ子通量允许改进的搜索,其灵敏度为$σ(d_μ)\leq 6\times10^{-23}e{\rm cm}$,比电流上限$|d_μ|\leq1.8\times10^{-19}e{\rm cm}$的灵敏度高大约三个数量级。95%)。随着新的高强度μ子束HIMB和冷μ子源muCool在PSI的出现,可以通过定制再加速方案以匹配实验注入相空间来进一步提高搜索的灵敏度。虽然零结果将在不受约束的威尔逊系数上设置一个显着提高的上限,但μ子EDM的发现将证实物理学的存在超出了标准模型。

英文摘要:

This letter of intent proposes an experiment to search for an electric dipole moment of the muon based on the frozen-spin technique. We intend to exploit the high electric field, $E=1{\rm GV/m}$, experienced in the rest frame of the muon with a momentum of $p=125 {\rm MeV/}c$ when passing through a large magnetic field of $|\vec{B}|=3{\rm T}$. Current muon fluxes at the $μ$E1 beam line permit an improved search with a sensitivity of $σ(d_μ)\leq 6\times10^{-23}e{\rm cm}$, about three orders of magnitude more sensitivity than for the current upper limit of $|d_μ|\leq1.8\times10^{-19}e{\rm cm}$\,(C.L. 95\%). With the advent of the new high intensity muon beam, HIMB, and the cold muon source, muCool, at PSI the sensitivity of the search could be further improved by tailoring a re-acceleration scheme to match the experiments injection phase space. While a null result would set a significantly improved upper limit on an otherwise un-constrained Wilson coefficient, the discovery of a muon EDM would corroborate the existence of physics beyond the Standard Model.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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