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arXiv 1809.09358hep-ph
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BGL模型中希格斯玻色子的FCNC衰变

FCNC decays of the Higgs bosons in the BGL model

Alexander Bednyakov, Veronika Rutberg

摘要:

我们在CP守恒的BGL模型的背景下考虑中性希格斯玻色子的变味衰变。BGL模型是Branco,Grimus和Lavoura提出的2 HDM Type 3模型的一个变体。研究了与SM Higgs性质的实验限制相容的参数空间的相关区域。我们还考虑了h-> mu tau的当前界限。此外,不同的FCNC衰变模式进行了分析,较重的Higgs态(H/A)和Br(A/H-> μ τ)的保守估计提供。我们更新了以前的研究,发现对于质量在350 GeV左右的重Higgses,它不能超过30%。

英文摘要:

We consider flavor-changing decays of neutral Higgs bosons in the context of CP-conserving BGL model - a variant of 2HDM Type 3 model suggested by Branco, Grimus and Lavoura - in which tree-level FCNC couplings are suppressed by elements of known fermion mixing matrices. The relevant regions of parameter space compatible with experimental restrictions on the SM Higgs properties are studied. We also include current bounds on h-> mu tau into consideration. In addition, different FCNC decay modes are analyzed for heavier Higgs states (H/A) and conservative estimates for Br(A/H->mu tau) are provided. We updated previous studies and found that it can not be more than 30% for heavy Higgses with masses around 350 GeV.

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