论文标题

MUON电偶极矩,作为违反风味diagonal CP的探测

Muon Electric Dipole Moment as a Probe of Flavor-Diagonal CP Violation

论文作者

Nakai, Yuichiro, Sato, Ryosuke, Shigekami, Yoshihiro

论文摘要

基本颗粒的电偶极矩(EDM)是违反风味的新物理学的强大探针。通过搜索MUON EDM搜索,据报道的MUON异常磁矩中的差异激励我们探索在何种程度上违反风味的CP违规物理学以解决差异。作为基准,我们专注于CP侵略的两-higgs-doublet模型,以解释MUON $ G-2 $异常,其中Muon专门与一个Higgs Doublet夫妇。由于抑制了对违反风味的过程以及电子EDM的贡献,因此MUON EDM成为模型的重要探针。我们的结果表明,某些可行的参数空间导致MUON EDM约为$d_μ\ simeq 6 \ times 10^{ - 23} \,e \,\ rm cm $由PSI实验探测的,并且大多数参数空间涵盖了所提出的J-PARC实验。

Electric dipole moments (EDMs) of elementary particles are powerful probes of new physics with flavor-diagonal CP violation. The reported discrepancy in the muon anomalous magnetic moment motivates us to explore to what extent new physics with flavor-diagonal CP violation to address the discrepancy is probed by searches for the muon EDM. As a benchmark, we focus on a CP-violating two-Higgs-doublet model to explain the muon $g-2$ anomaly where the muon exclusively couples to one Higgs doublet. Since contributions to flavor violating processes as well as the electron EDM are suppressed, the muon EDM becomes an essential probe of the model. Our result shows that some viable parameter space leads to the muon EDM of around $d_μ \simeq 6 \times 10^{-23} \, e \, \rm cm$ probed by the PSI experiment and most of the parameter space is covered by the proposed J-PARC experiment.

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