Soft-Collinear Factorization and the Calculation of the B->Xs+gamma Rate

Details Soft-Collinear Factorization and the Calculation of the B->Xs+gamma Rate Soft-Collinear Factorization and the Calculation of the B->Xs+gamma Rate

2004-08-18

arxiv.org/abs/hep-ph/0408208v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk presented at the 39th Rencontres de Moriond: Electroweak Interactions and Unified Theories (La Thuile, Italy, 21-

Scientific paper

10.1063/1.1920936

Using results on soft-collinear factorization for inclusive B-meson decay distributions, a systematic study of the partial B->Xs+gamma decay rate with a cut E_gammaXs+gamma branching ratio with E_gamma<1.8 GeV is Br(B->Xs+gamma)=(3.44+-0.53+-0.35)*10^{-4}, where the errors refer to perturbative and parameter uncertainties, respectively. The implications of larger theory uncertainties for New Physics searches are explored with the example of the type-II two-Higgs-doublet model.

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