Re-examination of the rare decay $B_s \to ϕμ^+ μ^-$ using holographic light-front QCD
We calculate the Standard Model (SM) predictions for the differential branching ratio of the rare $B_s \to ϕμ^+ μ^-$ decays using $B_s \to ϕ$ transition form factors (TFFs) obtained using holographic light-front QCD (hQCD) instead of the traditional QCD sum rules (QCDSR) . Our predictions for the differential branching ratio is in better agreement with the LHCb data. Also, we find that the hQCD prediction for $R_{K^*ϕ}$, the ratio of the branching fraction of $B \to K^* μ^+ μ^-$ to that of $B_s \to ϕμ^+ μ^-$ , is in excellent agreement with both the LHCb and CDF results in low $q^2$ range.
hep-ph↗