Inclusive semileptonic fits, heavy quark masses, and V_cb

Understand

We perform global fits to the moments of semileptonic B decay distributions and extract |V_cb|, the heavy quark masses, and the non-perturbative parameters of the heavy quark expansion.

• We include NNLO perturbative corrections and recent determinations of the charm mass, and discuss how they improve the precision of the global fit.
• In particular, using the m_c determination of Ref.[11] we get m_b^kin=4.541(23) GeV and |V_cb|=(42.42+- 0.86) 10^{-3}.
• We also discuss the implications of the new fits for the normalization of rare B decays, the zero-recoil sum rule in B-> D* l nu, and the inclusive determination of |V_ub|.