Renormalon Analysis of Heavy-Light Exclusive B Decays
High Energy Physics - Phenomenology
2009-11-07 v1
Abstract
We study two-body exclusive decays of the form B -> D^(*) L (L = \pi, \rho) in the heavy quark limit. We perform a renormalon analysis of such processes to determine the order at which nonperturbative factorization-breaking power corrections enter the amplitude. We find that a class of leading power corrections to the color octet matrix element, of O(\Lambda_QCD/m_b), vanish in the limit of a symmetric light meson parton distribution function. We discuss the phenomenological significance of this result.
Keywords
Cite
@article{arxiv.hep-ph/0101190,
title = {Renormalon Analysis of Heavy-Light Exclusive B Decays},
author = {Craig N. Burrell and Alexander R. Williamson},
journal= {arXiv preprint arXiv:hep-ph/0101190},
year = {2009}
}
Comments
12 pages, 2 figures