TL;DR
This paper advances the precision of theoretical predictions for B meson semileptonic decay moments by calculating NNLO corrections, providing detailed results for various experimental cuts and mass schemes.
Contribution
It presents the first NNLO (O(alphas^2)) calculations of moments in inclusive B decays, improving the accuracy of theoretical models.
Findings
Small deviations from previous O(alphas^2 beta0) calculations.
Computed moments for various lepton energy cuts and schemes.
Reviewed mass scheme relations.
Abstract
The calculation of the moments in inclusive B meson semileptonic decays is upgraded to O(alphas^2). The first three moments of the lepton energy and invariant hadronic mass distributions are computed for arbitrary cuts on the lepton energy and in various renormalization schemes, finding in general small deviations from the O(alphas^2 beta0) calculation. I also review the relation between MSbar and kinetic heavy quark masses.
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