Speaker
Description
The LHCb experiment has recently reported evidence of deviation from the Standard Model from B decays. The experimental data also suggests that there can be a $q^2$ dependence in $R_K^*$. In this talk, I will address the q^2 dependence in two possible scenarios. The first scenario is that the $q^2$ dependence is actually due to hadronic effects. The hadronic effects are kinematically suppressed in the SM but not in new physics. I will show that, with modifications of one of the form factors, one can explain the $q^2$ dependence in $R_K^*$. In the second scenario, I will introduce an additional light $Z^{\prime}$ to account for the $q^2$ dependence. I will discuss the current constraints with a light $Z^{\prime}$ and will show how a light $Z^{\prime}$ together with some other new physics can explain the experimental data.
