B → D(*)τντ decays in two-Higgs-doublet models

3rd Symposium on Prospects in the Physics of Discrete Symmetries

Celis, Alejandro^1 ; Jung, Martin^2 ; Li, Xin-Qiang^1,3 ; Pich, Antonio^1

IFIC, Universitat de València-CSIC, Apt. Correus 22085, E-46071 València, Spain^1

Institut für Physik, Technische Universität Dortmund, D-44221 Dortmund, Germany^2

Physics Department, Henan Normal University, Xinxiang Henan 453007, China^3

关键词: Decay rate;    Higgs doublet models;    Lepton-flavor;    Leptonic decay;    Tree level;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/447/1/012058/pdf
DOI  :  10.1088/1742-6596/447/1/012058

来源: IOP

【 摘 要 】

A sizable excess with respect to the SM expectation has been reported recently by the BaBar collaboration in the decay rates B → D(*)τν, normalized by the corresponding light lepton modes. A violation of lepton flavor universality as suggested by this excess could be due to a charged Higgs mediating these processes at tree level. In this talk we analyze the implications of the observed excess within the framework of two-Higgs-doublet models, considering also the bounds from other semileptonic and leptonic decays of B and D(s) mesons. Prospects for B → D(*)τν decays at future Super-Flavor Factories are also discussed.