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Factorization and Sudakov Resummation in B -> gamma l nu

Stefan W. Bosch
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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.

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Stefan W. Bosch. 2003-08-29. Factorization and Sudakov Resummation in B -> gamma l nu. https://doi.org/10.1140/epjcd%2Fs2003-03-208-0

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