arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1712.04871hep-phhep-ex
收藏

质子衰变为带电轻子

Proton decay into charged leptons

Thomas Hambye, Julian Heeck

摘要:

我们讨论了末态中涉及三个轻子的质子和中子衰变。这些模式中的一些可能构成主导衰变通道,因为它们保存了在所有通常考虑的通道中被破坏的轻子味对称性。其中包括特别有趣且很少讨论的$p\to e^+ e^+ μ^-$和$p\to μ^+ μ^+ e^-$模式。当相关的有效算符出现在9维或10维时,对三轻子模的观测将探测到100 TeV量级的能量标度。这允许将质子衰变与其他探测器(如稀有介子衰变或对撞机物理)联系起来。这种涉及到细夸克的情形的紫外完备性无疑违反了轻子味普适性,并且可以解释最近在$B$介子衰变中观察到的$b\to sμμ$异常。

英文摘要:

We discuss proton and neutron decays involving three leptons in the final state. Some of these modes could constitute the dominant decay channel because they conserve lepton-flavor symmetries that are broken in all usually considered channels. This includes the particularly interesting and rarely discussed $p\to e^+ e^+ μ^-$ and $p\to μ^+ μ^+ e^-$ modes. As the relevant effective operators arise at dimension 9 or 10, observation of a three-lepton mode would probe energy scales of order 100 TeV. This allows to connect proton decay to other probes such as rare meson decays or collider physics. UV completions of this scenario involving leptoquarks unavoidably violate lepton flavor universality and could provide an explanation to the recent $b\to sμμ$ anomalies observed in $B$ meson decays.

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。

↑