We present upgraded theoretical predictions for inclusive and exclusive radiative decays of { \it B} mesons. Our results include those next-to-leading order corrections that have already been computed. Our best estimates in the Standard Model are $BR(B \rightarrow K^* \gamma)=(4.3 \pm 0.9^{ +1.4}_{ -1.0}) \times 10^{ -5}$, $BR(B \rightarrow X_s \gamma) =(1.9 \pm 0.2\pm 0.5) \times 10^{ -4}$, $\Gamma(B \rightarrow K^* \gamma)/ \Gamma(B \rightarrow X_s \gamma)=0.23 \pm 0.09$ and $BR(B \rightarrow X_s g)= (1.57 \pm 0.15 ^{ +0.86}_{ -0.59} \pm 0.23) \times 10^{ -3}$. We also consider limits found with two-Higgs-doublet models.
Categories: hep-ph