arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2203.00702hep-phhep-ex
收藏

μ子-电子转换的同位素依赖性

Isotope dependence of muon-to-electron conversion

Julian Heeck, Robert Szafron, Yuichi Uesaka

摘要:

在原子核场中,μ介子到电子的轻子味违反转换是超越标准模型的最敏感的物理探测器之一,而μ 2 e、彗星和DeeMe实验将在不久的将来探索未知的领域。对这种$μ^-\to e^-$转换过程的观察,开辟了通过利用转换率的靶核依赖性来区分基础算子或新物理模型的可能性。为了便于选择最佳目标,我们提供了所有稳定同位素的$μ^-\to e^-$转换率,并估计了核结构的不确定性。我们的研究结果使混合或浓缩的目标材料,特别是有前途的区分方案中的μ介子转换质子或中子的研究。

英文摘要:

The lepton-flavor-violating conversion of a muon into an electron in the field of a nucleus is one of the most sensitive probes of physics beyond the Standard Model and the experiments Mu2e, COMET, and DeeMe will explore uncharted terrain in the near future. An observation of this $μ^-\to e^-$ conversion process opens up the possibility to distinguish the underlying operator or new-physics model by exploiting the target-nucleus dependence of the conversion rate. To facilitate the choice of optimal targets we provide $μ^-\to e^-$ conversion rates for all stable isotopes and estimate nuclear-structure uncertainties. Our results enable studies of mixed or enriched target materials that are particularly promising for distinguishing scenarios in which the muon converts either on protons or neutrons.

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。

↑