The $B\to D^{(\ast )}l{\nu }_l$ decays in the pQCD approach with the Lattice QCD input

Ying-Ying Fan, Zhen-Jun Xiao, Ru-Min Wang +1

In this paper, we studied the semileptonic decays $B\to D^{(\ast )}{l}^{-}{\bar{\nu }}_l$ by using the "pQCD+Lattice QCD" method. We made the extrapolation for the six relevant form factors by…