Estimate of B(B̄→Xsγ) at O(αs2)

Estimate of B(B̄→Xsγ) at O(αs2)

Combining our results for various O(αs2) corrections to the weak radiative B-meson decay, we are able to present the first estimate of the branching ratio at the next-to-next-to-leading order in QCD. We find B(B̄→Xsγ)=(3.15±0.23)×10-4 for Eγ>1.6GeV in the B̄-meson rest frame. The four types o...

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Main Authors: Misiak, M, Asatrian, H, Bieri, K, Czakon, M, Czarnecki, A, Ewerth, T, Ferroglia, A, Gambino, P, Gorbahn, M, Greub, C, Haisch, U, Hovhannisyan, A, Hurth, T, Mitov, A, Poghosyan, V, Ślusarczyk, M, Steinhauser, M
格式: Journal article
語言:English
出版: 2007

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