Lepton mass effects and angular observables in ${\Lambda }_b\to \Lambda (\to p\pi ){\ell }^{+}{\ell }^{-}$

Shibasis Roy, Ria Sain, Rahul Sinha

The flavor changing rare decay $B\to K^{\ast }(\to K\pi ){\ell }^{+}{\ell }^{-}$ is one of the most studied modes due to its sensitivity to physics beyond the standard model and several discrepanci…