Factorization and Sudakov Resummation in Leptonic Radiative B Decay

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dc.creatorBosch, S. W.
dc.creatorHill, R. J.
dc.creatorLange, B. O.
dc.creatorNeubert, M.
dc.date2003-01-16
dc.date2003-04-07
dc.date.accessioned2026-07-07T11:09:19Z
dc.date.available2026-07-07T11:09:19Z
dc.descriptionSoft-collinear effective theory is used to prove factorization of the B->gamma+l+nu decay amplitude at leading power in Lambda/m_b, including a demonstration of the absence of non-valence Fock states and of the finiteness of the convolution integral in the factorization formula. Large logarithms entering the hard-scattering kernel are resummed by performing a two-step perturbative matching onto the low-energy effective theory, and by solving evolution equations derived from the renormalization properties of the leading-order B-meson light-cone distribution amplitude. As a byproduct, the evolution equation for heavy-collinear current operators in soft-collinear effective theory is derived.
dc.description20 pages, 5 figures; several references added or updated, extended discussion of the new elements of the factorization proof, typo in eq.(6) fixed; version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/0301123
dc.identifierhttp://arxiv.org/abs/hep-ph/0301123
dc.identifierPhys.Rev.D67:094014,2003
dc.identifierdoi:10.1103/PhysRevD.67.094014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190424
dc.subjectHigh Energy Physics - Phenomenology
dc.titleFactorization and Sudakov Resummation in Leptonic Radiative B Decay
dc.typetext

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