Aug 20 – 25, 2023
Universität Hamburg
Europe/Berlin timezone

Search for charged lepton flavor violation at Belle

Aug 21, 2023, 9:40 AM
15m
Hörsaal M (Historic main building)

Hörsaal M

Historic main building

Edmund-Siemers-Allee 1
Parallel session talk Searches for New Physics T10 Searches for New Physics

Speaker

Sourav Patra (BELLE (BELLE II Experiment))

Description

Charged lepton flavor violation (CLFV) is an unambiguous signature of new physics. In the Belle experiment, we study various CLFV signatures, which include $\tau$ leptons in the final state. In this presentation, we report searches for CLFV in $\Upsilon(1S) \to \ell^{\pm}\ell^{\prime\mp}$ and $\chi_{bJ}(1P)\to \ell^{\pm}\ell^{\prime\mp}$ decays, where $\ell,\ell^\prime =e, \mu, \tau$ using $25 {\rm fb}^{-1}$ of $\Upsilon(2S)$ data. Using 772 million $B\bar{B}$ sample, we search for CLFV in $B^+\to\tau^{\pm}\ell^{\mp}$ decays, where $\ell=e,\mu$. Also,
we search for CLFV in $B^0_s\to\ell^{\pm}\tau^{\mp}$ decays, where $\ell=e,\mu$, using $121 {\rm fb}^{-1}$ of $\Upsilon(5S)$ sample.

Collaboration / Activity Belle Collaboration

Primary author

Sourav Patra (BELLE (BELLE II Experiment))

Co-authors

Prof. Vishal Bhardwaj (IISER Mohali) Prof. Karim Trabelsi (IJCLab France) Prof. Swagato Banerjee (University of Louisville USA)

Presentation materials