Factorization and Sudakov Resummation in B -> gamma l nu

Details Factorization and Sudakov Resummation in B -> gamma l nu Factorization and Sudakov Resummation in B -> gamma l nu

2003-08-29

arxiv.org/abs/hep-ph/0308319v1

Eur.Phys.J.C33:s294-s296,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, 1 figure; contribution to proceedings of "International Europhysics Conference on High Energy Physics" EPS (July 17th

Scientific paper

10.1140/epjcd/s2003-03-208-0

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.

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