C. Greub

The inclusive $\bar B \to X_s \gamma$ decay rate with higher precision

We present a new and upgraded analysis of the inclusive weak radiative decay of the $B$ meson in the standard model and beyond. The ${\mathcal O}(\alpha_s)$ perturbative corrections are included in a formally complete manner. At the order $\alpha_s^2$, exact dependence on the charm quark mass is calculated for the domi...