Implication of $b\to c\tau \nu$ flavor anomalies on $B_s\to D_s^{\ast }\tau \nu$ decay observables

Nilakshi Das, Rupak Dutta

The experimental predictions of $R_D$, $R_{D^{\ast }}$, $R_{J/\psi }$, $P_{\tau }^{D^{\ast }}$ and $F_L^{D^{\ast }}$ in $B$ decays mediated via $b\to cl\nu$ quark level transition deviate significantly…