Probing New Physics with $q^2$ distributions in $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$

Yasuhito Sakaki, Minoru Tanaka, Andrey Tayduganov +1

Recent experimental results for the ratios of the branching fractions of the decays $\bar{B}\to D^{(\ast )}\tau \bar{\nu }$ and $\bar{B}\to D^{(\ast )}\mu \bar{\nu }$ came as a surprise and lead to a d…