Speaker
Lopamudra Nayak
(IIT Hyderabad)
Description
We present a search for the lepton flavor violating decays $B_s \rightarrow \ell \tau$; $\ell = e, \mu$ using the full data sample of 121.4 fb$^{-1}$ of data recorded on $\Upsilon(5S)$ resonance with the Belle detector at the KEKB asymmetric energy $e^+e^-$ collider. We use $B_s\bar{B_s}$ events in which one $B_s$ meson is reconstructed in a semileptonic $B_s \rightarrow D_s \ell \nu$ decay mode and another $B_s$ meson is reconstructed in the signal mode. For this search, the τ lepton is reconstructed from $\tau^- \to e^- \nu_\tau \bar{\nu}_{e}$ and $\tau^- \to \mu^- \nu_\tau \bar{\nu}_{\mu}$ decay channels. We will set an upper limit on branching fraction $\mathcal{B}(UL)$ of these decays.
| Session | Quark and Lepton Flavour Physics |
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Author
Lopamudra Nayak
(IIT Hyderabad)
