Measurement of the branching fraction of $B\to D^{(\ast )}\pi \ell \nu$ at Belle using hadronic tagging in fully reconstructed events

A. Vossen, I. Adachi, K. Adamczyk +157

We report a measurement of the branching fraction of the decay $B\to D^{(\ast )}\pi \ell \nu$. The analysis uses 772$\times 10^6$ $B\bar{B}$ pairs produced in $e^+e^-\rightarrow Υ(4…