1.0KMI - Nagoya Universityhttps://www.kmi.nagoya-u.ac.jp/engTree-level new physics searches in B decays to tau leptons - KMI - Nagoya Universityrich600338<blockquote class="wp-embedded-content" data-secret="rMnss1dykE"><a href="https://www.kmi.nagoya-u.ac.jp/eng/seminar/974/">Tree-level new physics searches in B decays to tau leptons</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.kmi.nagoya-u.ac.jp/eng/seminar/974/embed/#?secret=rMnss1dykE" width="600" height="338" title="“Tree-level new physics searches in B decays to tau leptons” — KMI - Nagoya University" data-secret="rMnss1dykE" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script type="text/javascript">
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In the SM, the semileptonic decay B → D(*) tau nu proceeds via a tree-level process with an intermediate W boson. The charged Higgs boson in supersymmetry or two-Higgs doublet models might give a significant contribution to this decay due to large mass of tau lepton. Although the branching fractions of these decays are a few percent level, it is not so easy to detect them due to the multiple neutrinos in final state. B → D* tau nu decay …