2 HDM中的双电子和双光子通道
Dielectron and Diphoton channels in 2HDM
摘要：
Randall和Wise最近观察到，标准模型中的任何粒子都不能衰变到$e^+e^-$和$γγ$具有不可测量的分支比的终态.这也适用于标准模型的大多数扩展，兰德尔-桑德拉姆模型是一个突出的例外。在本文中，我们表明，两希格斯双模型（2 HDM）产生另一种可能的例外，如果某些参数选择适当。此外，我们还验证了该模型能经受住低能过程的检验，包括轻子的反常磁矩和电偶极矩，轻子味破坏衰变$μ^- \to e^- γ$和$e^- e^+ e^-$ .
英文摘要：
It was observed recently by Randall and Wise that, any particle in the Standard Model cannot decay to $e^+e^-$ and $γγ$ final states with comparably measurable branching ratios. This is also true for most extensions of the Standard Model, with the Randall-Sundrum model as an outstanding exception. In this paper, we show that two-Higgs-Doublet-Models (2HDM) yield another possible exception if certain parameters are properly chosen. In addition, we have checked that this model survives the tests of low energy processes, including the anomalous magnetic moment and electric dipole moment of leptons, lepton-flavor-violating decays $μ^- \to e^- γ$ and $e^- e^+ e^-$.
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