论文标题
MUON对电子转换的同位素依赖性
Isotope dependence of muon-to-electron conversion
论文作者
论文摘要
在核场中，MUON向电子污染的转化是超出标准模型以外的物理学探针之一，而MU2E，Comet和Deeme的实验将在不久的将来探索未知的地形。通过利用转换率的目标核依赖性来区分基础操作员或新生理学模型的可能性，可以观察到$μ^ - \ to e^ - $转换过程。为了促进最佳目标的选择，我们为所有稳定的同位素提供$μ^ - \至E^ - $转换率，并估计核结构不确定性。我们的结果可以研究混合或富集的目标材料，这些材料特别有希望地区分穆恩在质子或中子上转换的情况。
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.
