Theory of Inclusive B Decays

Abstract

In this talk I briefly review the current status of the theory of the inclusive $B$ decays: $\bar{B}\to X_c\ell \bar{\hat{I}}{½}_{\ell }$, $\bar{B}\to X_u\ell \bar{\hat{I}}{½}_{\ell }$, and $\bar{B}\to X_s{\hat{I}}^3$. I try to answer three questions: what is the current "state of the art", can the theoretical prediction be improved, and will it lead to a smaller theoretical uncertainty.

Talk presented at the 8th Workshop on Theory, Phenomenology and Experiments in Flavour Physics: Neutrinos, Flavor Physics and Beyond (FP- Capri22)