Exploring the role of new physics in $b\to u\tau \bar{\nu }$ decays

Aishwarya Bhatta, Atasi Ray, Rukmani Mohanta

The recent measurements on $R_D$, $R_{D^{\ast }}$ and $R_{J/\psi }$ by three pioneering experiments, BaBar, Belle and LHCb, indicate that the notion of lepton flavour universality is violate…