Factorization and Sudakov Resummation in B -> gamma l nu
High Energy Physics - Phenomenology
2011-09-13 v1
Abstract
We apply Soft-Collinear Effective Theory to prove at leading power in Lambda_QCD/m_b a factorization formula for the radiative leptonic decay B -> gamma l nu. Large logarithms entering the hard-scattering kernel are systematically resummed by a two-step perturbative matching procedure.
Cite
@article{arxiv.hep-ph/0308319,
title = {Factorization and Sudakov Resummation in B -> gamma l nu},
author = {Stefan W. Bosch},
journal= {arXiv preprint arXiv:hep-ph/0308319},
year = {2011}
}
Comments
3 pages, 1 figure; contribution to proceedings of "International Europhysics Conference on High Energy Physics" EPS (July 17th-23rd 2003) in Aachen; to appear in European Physical Journal C direct