NNLO corrections to B --> Xu l nu and the determination of |Vub|
Abstract
The calculation of partial decay rates in B --> Xu l nu decays at next-to-next-to-leading order (NNLO) in alphas and to leading order in 1/mb is described. New results for the hard function are combined with known results for the jet function and shape-function moments in a numerical analysis which explores the impact of the NNLO corrections on partial decay rates and the determination of |Vub|.
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