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- W1633601735 abstract "We review the theoretical understanding of the branching ratio and photon-energy spectrum in B -> Xs gamma decays at next-to-leading order in QCD, including consistently the effects of Fermi motion. For the Standard Model, we obtain B(B -> Xs gamma)=(3.29 +- 0.33)*10^{-4} for the total branching ratio, and B(B -> Xs gamma)=(2.85+0.34-0.40)*10^{-4} if a cut E_gamma > 2.1 GeV is applied on the photon energy, as done in the recent CLEO analysis. A precise measurement of the photon spectrum would help reducing the theoretical uncertainty and yield important information on the momentum distribution of b quarks inside B mesons." @default.
- W1633601735 created "2016-06-24" @default.
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- W1633601735 date "1998-09-14" @default.
- W1633601735 modified "2023-09-27" @default.
- W1633601735 title "Theoretical Status of B -> Xs gamma Decays" @default.
- W1633601735 hasPublicationYear "1998" @default.
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