发表机构
Southern University of Science and Technology; Nanjing Normal University; International Center for Theoretical Physics Asia-Pacific（南方科技大学; 南京师范大学; 亚太理论物理国际中心）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
研究CMS合作组报告的146 GeV希格斯玻色子轻子味违反衰变信号与现有低能轻子味违反限制的兼容性，用含七个自由参数的有效描述，经贝叶斯MCMC分析得出偏好模式，高能和低能实验将在未来十年验证或排除该异常标量解释。
AI 中文摘要
CMS合作组在13 TeV的\(\sqrt{s}\)下寻找希格斯玻色子和额外希格斯玻色子在\(e\mu\)末态的轻子味违反衰变时，报告了146 GeV处的局部过剩。若得到证实，这将构成带电轻子味违反（cLFV）的重要证据。我们在自底向上的有效描述中研究了所声称信号与现有低能cLFV限制的兼容性……
英文摘要
The CMS Collaboration reported a local excess at $146~\mathrm{GeV}$ in the search for the lepton-flavor-violating decay of the Higgs boson and additional Higgs bosons in the $eμ$ final state at $\sqrt{s}= 13~\mathrm{TeV}$. If confirmed, this would constitute a major piece of evidence of charged lepton flavor violation (cLFV). We investigate the compatibility of the claimed signal with the full suite of existing low-energy cLFV constraints in a bottom-up effective description: a single real scalar of mass $146~\mathrm{GeV}$ coupled to gluons and to all charged-lepton bilinears, with seven free parameters that simultaneously control the LHC production cross section, every di-lepton decay channel, and every low-energy cLFV observable. A Bayesian MCMC analysis against $μ-e$ conversion, muonium-antimuonium oscillation, three-lepton and radiative LFV decays, semileptonic $τ$ LFV decays, and LHC di-lepton searches yields a preferred mode with peaked value $Y_{eμ} \sim 10^{-4.09}$, already cut into by the current $μ-e$ conversion limits. The projected sensitivities of Mu2e, COMET, Mu3e, MACE, MEG~II, Belle~II, STCF, and the HL-LHC directly probe the region of coupling space selected by the CMS excess, so the complementarity between high-energy and low-energy cLFV probes will either corroborate or decisively exclude the scalar interpretation of the anomaly within the next decade.
Comments27 pages, 12 figures
