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A first glance to the kinematic moments of B → Xc ℓν at third order
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Journal Article
A first glance to the kinematic moments of B → Xc ℓν at third order
2022
Overview
Abstract We study the impact of third-order QCD corrections for several kinematic moments of the inclusive semileptonic B decays, to first order in the 1/m b expansion. We consider the first four moments of the charged-lepton energy E R spectrum, the total leptonic invariant mass q 2 and the hadronic invariant mass M X 2 M_(X)² . No experimental cuts are applied. Our analytic results are obtained via an asymptotic expansion around the limit m b m c . After converting the scheme for the bottom mass to the kinetic scheme we compare the size of higher QCD corrections to the contributions from 1/ m b 2 m_(b)² and 1/ m b 3 m_(b)³ power corrections and to the relative uncertainties.
Publisher
SpringerOpen
