Estimate of BR(B -> X_s gamma) at O(alpha_s^2)

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dc.creatorMisiak, M.
dc.creatorAsatrian, H. M.
dc.creatorBieri, K.
dc.creatorCzakon, M.
dc.creatorCzarnecki, A.
dc.creatorEwerth, T.
dc.creatorFerroglia, A.
dc.creatorGambino, P.
dc.creatorGorbahn, M.
dc.creatorGreub, C.
dc.creatorHaisch, U.
dc.creatorHovhannisyan, A.
dc.creatorHurth, T.
dc.creatorMitov, A.
dc.creatorPoghosyan, V.
dc.creatorSlusarczyk, M.
dc.creatorSteinhauser, M.
dc.date2006-09-22
dc.date2006-12-31
dc.date.accessioned2026-07-07T11:05:46Z
dc.date.available2026-07-07T11:05:46Z
dc.descriptionCombining our results for various O(alpha_s^2) 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 BR(B -> X_s gamma) = (3.15 +_ 0.23) x 10^-4 for E_gamma > 1.6 GeV in the B-meson rest frame. The four types of uncertainties: non-perturbative (5%), parametric (3%), higher-order (3%) and m_c-interpolation ambiguity (3%) have been added in quadrature to obtain the total error.
dc.description4 pages, 4 figures. Version accepted by the PRL. Words disallowed by the journal removed from the title. References updated and a note added
dc.identifierhttps://arxiv.org/abs/hep-ph/0609232
dc.identifierhttp://arxiv.org/abs/hep-ph/0609232
dc.identifierPhys.Rev.Lett.98:022002,2007
dc.identifierdoi:10.1103/PhysRevLett.98.022002
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/189308
dc.subjectHigh Energy Physics - Phenomenology
dc.titleEstimate of BR(B -> X_s gamma) at O(alpha_s^2)
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