Corrections to $R_D$ and $R_{D^{\ast }}$ in the BLMSSM

Zhong-Jun Yang, Shu-Min Zhao, Xing-Xing Dong +3

The deviation of the measurement of $R_D$ ($R_{D^{\ast }}$) from the Standard Model (SM) expectation is $2.3\sigma$ ($3.1\sigma$). $R_D$ ($R_{D^{\ast }}$) is the ratio of the branching fraction…