arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.09612hep-ph
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探测$μe γγ$触点与$μ\to e$转换的交互

Probing $μe γγ$ contact interactions with $μ\to e$ conversion

Sacha Davidson, Yoshitaka Kuno, Yuichi Uesaka, Masato Yamanaka

摘要:

一个μ子、一个电子和两个光子的接触相互作用可以促成$μ\to e γγ$的衰变,也可以促成在原子核的电场中μ子向电子的转换。我们计算的$μ\to e$转换率,并表明,对于涉及组合$FF \propto |\vec{E}|^2$(而不是$F\tilde{F} \propto \vec{E} \cdot \vec{B}$)的运营商的系数,$μ\to e$转换的当前界限比$μ\to e γγ$的界限更敏感。

英文摘要:

Contact interactions of a muon, an electron and two photons can contribute to the decay $μ\to e γγ$, but also to the conversion of a muon into an electron in the electric field of a nucleus. We calculate the $μ\to e$ conversion rate, and show that for the coefficients of operators involving the combination $FF \propto |\vec{E}|^2$ (as opposed to $F\tilde{F} \propto \vec{E} \cdot \vec{B}$), the current bound on $μ\to e$ conversion is more sensitive than the bound on $μ\to e γγ$.

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