We present preliminary updated global fits to the moments of semileptonic B decay distributions and extract |Vcb| in addition to the heavy quark masses (mb, mc), and non-perturbative heavy quark expansion parameters (μπ, μG, ρD, ρLS ). Included are both NNLO perturbative corrections and presently calculated perturbative corrections to the power sup- pressed operators. We also discuss briefly the method of integration used to compute the O(αsΛ2QCD/m2b) corrections.
The Inclusive Determination of |Vcb|
ALBERTI, ANDREA;GAMBINO, Paolo;HEALEY, Kristopher Jason;
2016-01-01
Abstract
We present preliminary updated global fits to the moments of semileptonic B decay distributions and extract |Vcb| in addition to the heavy quark masses (mb, mc), and non-perturbative heavy quark expansion parameters (μπ, μG, ρD, ρLS ). Included are both NNLO perturbative corrections and presently calculated perturbative corrections to the power sup- pressed operators. We also discuss briefly the method of integration used to compute the O(αsΛ2QCD/m2b) corrections.
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