Speaker
Description
The measurements on lepton flavor universality violation in semileptonic $b\to s$ and $b\to c$ transitions hint towards a possible role of new physics in both sectors. Motivated by these anomalies, we investigate the lepton flavor violating $B\to K^*_2 (1430)\mu^{\pm}\tau^{\mp}$ decays. We calculate the two-fold angular distribution of $B\to K^*_2\ell_1\ell_2$ decay in presence of vector, axial-vector, scalar and pseudo-scalar new physics interactions. Later, we compute the branching fraction and lepton forward-backward asymmetry in the framework of $U^{2/3}_1$ vector leptoquark which is a viable solution to the $B$ anomalies. We find that the upper limits are $\mathcal{B}(B\to K^*_2\mu^-\tau^+)\leq 0.74\times10^{-8}$ and $\mathcal{B}(B\to K^*_2\mu^+\tau^-)\leq 0.33\times 10^{-7}$ at $90\%$ C.L.
| Session | Quark and Lepton Flavour Physics |
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