Perturbative corrections to power suppressed effects in $\bar B\to X_u\ell\nu$
High Energy Physics - Phenomenology
2022-07-15 v2
Abstract
We compute the corrections to the Wilson coefficients of the dimension five operators in inclusive semileptonic decays in the limit of a massless final quark. Our calculation agrees with reparameterization invariance and with previous results for the total width and places constraints on the shape functions that enter those decays.
Keywords
Cite
@article{arxiv.2102.03343,
title = {Perturbative corrections to power suppressed effects in $\bar B\to X_u\ell\nu$},
author = {Bernat Capdevila and Paolo Gambino and Soumitra Nandi},
journal= {arXiv preprint arXiv:2102.03343},
year = {2022}
}
Comments
20 pages, 2 figures; v2: corrected typo in Eq. (5.5)