51st Rencontres de Moriond EW 2016

$\overline{B} \rightarrow D^{(\ast)}\tau\overline{\nu}_{\tau}$ decays with hadronic and semileptonic tagging at Belle

13 mars 2016, 08:30

15m

Ordinary Experiment Heavy Flavours

Orateur

Dr Pablo Goldenzweig (KIT)

Description

The ratio of the measured $\overline{B} \to D^{(\ast)} l \overline{\nu}$ decay rates for $l=\tau$ vs. $e,\mu$ from BaBar, Belle, and LHCb together show a significant deviation from the Standard Model. Belle's 2015 result of $\overline{B} \rightarrow D^{(\ast)} \tau^{-}\overline{\nu}_{\tau}$ with hadronic tagging and the current world average will be discussed. Furthermore, Belle's preliminary new measurement of $\overline{B^{0}} \rightarrow D^{\ast+} \tau^{-} \overline{\nu}_{\tau}$ with the semileptonic tagging method will be introduced along with compatibility studies with selected New Physics models.

Documents de présentation

Transparents

Moriond16_Belle_Goldenzweig.pdf