$V_{cb}$ puzzle in semi-leptonic $B\to D^{\ast }$ decays revisited

Shuang-Yi Li, Jie Xu, Rui-Xiang Shi +2

Inspired by the newly reported $B\to D^{\ast }(\to D\pi )\ell {\bar{\nu }}_{\ell }$ differential decay rates by the Belle and Belle II Collaborations, we revisit the $V_{cb}$ puzzle in semi-leptonic $…