电弱尺度上违反味的希格索粒子积累提示
Accumulating Hints for Flavour Violating Higgses at the Electroweak Scale
AI总结：
本文通过引入第二个希格斯双态场，解释了h→eτ、h→μτ、b→sℓ⁺ℓ⁻、W质量、R(D(*))及t→bH⁺(130 GeV)的过剩现象，同时满足实验限制。模型预测希格斯耦合强度变化及t→hc率，符合最新测量结果。
摘要：
我们展示，仅通过标准模型引入第二个希格斯双态场，可以同时解释h→eτ、h→μτ、b→sℓ⁺ℓ⁻、W质量、R(D(*))以及t→bH⁺(130 GeV)→b\overline{b}c的过剩现象。尽管需要违反味耦合，但诸如μ→eγ、τ→μγ、B_s-\bar B_s混合、b→sγ、低质量二喷射及pp→H⁺H⁻→τ⁺τ⁻ν\barν搜索等严格限制可以避免。然而，该模型非常受限，不可避免地预测标准模型希格斯耦合强度对tau轻子的变化以及非零的t→hc率，这确实符合最近的测量结果。我们研究了三个基准点，提供这种同时解释，并计算了它们的预测，包括可以用即将到来的LHC run-3数据测试的碰撞信号。
英文摘要：
We show that supplementing the Standard Model by only a second Higgs doublet, a combined explanation of $h\to eτ$, $h\to μτ$, $b\to s \ell^+ \ell^-$, the $W$ mass and $R({D^{(*)}})$ as well as the excess in $t\to bH^+(130\,{\rm GeV})\to b\overline{b}c$ is possible. While this requires flavour violating couplings, the stringent bounds from e.g. $μ\to eγ$, $τ\to μγ$, $B_s-\bar B_s$ mixing, $b\to sγ$, low mass di-jet and $pp\to H^+H^-\to τ^+τ^-ν\barν$ searches can be avoided. However, the model is very constrained, it inevitably predicts a shift in the SM Higgs coupling strength to tau leptons as well as a non-zero $t\to hc$ rate, as indeed preferred by recent measurements. We study three benchmark points providing such a simultaneous explanation and calculate their predictions, including collider signatures which can be tested with upcoming LHC run-3 data.
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。
