Non-perturbative effects in semi-leptonic B_c decays
High Energy Physics - Phenomenology
2011-03-23 v1
Abstract
We discuss the impact of the soft degrees of freedom inside the B_c meson on its rate in the semi-leptonic decay B_c -> X l nu_l where X denotes light hadrons below the D^0 threshold. In particular we identify contributions involving soft hadrons which are non-vanishing in the limit of massless leptons. These contributions become relevant for a measurement of the purely leptonic B_c decay rate, which due to helicity suppression involves a factor m_l^2 and thus is much smaller than the contributions involving soft hadrons.
Cite
@article{arxiv.hep-ph/0109250,
title = {Non-perturbative effects in semi-leptonic B_c decays},
author = {Th. Mannel and St. Wolf},
journal= {arXiv preprint arXiv:hep-ph/0109250},
year = {2011}
}
Comments
LaTeX, 22 pages, 1 figure