Constraints on new physics couplings from $\bar{B}\to D^{\ast }(D\pi )\ell {\bar{\nu }}_{\ell }$ angular analysis

Nicola Losacco

The Belle Collaboration has measured the complete set of angular coefficient functions for the decays $\bar{B}\to D^{\ast }(D\pi )\ell {\bar{\nu }}_{\ell }$, where $\ell =e,\mu$, in fo…