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Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$
Combining 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...
| Autores principales: | , , , , , , , , , , , , , , , , |
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| Lenguaje: | eng |
| Publicado: |
2006
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| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.1103/PhysRevLett.98.022002 http://cds.cern.ch/record/985382 |
| _version_ | 1780911213867171840 |
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| author | Misiak, M. Asatrian, H.M. 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. Slusarczyk, M. Steinhauser, M. |
| author_facet | Misiak, M. Asatrian, H.M. 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. Slusarczyk, M. Steinhauser, M. |
| author_sort | Misiak, M. |
| collection | CERN |
| description | Combining 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. |
| id | cern-985382 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2006 |
| record_format | invenio |
| spelling | cern-9853822022-01-29T03:28:30Zdoi:10.1103/PhysRevLett.98.022002http://cds.cern.ch/record/985382engMisiak, M.Asatrian, H.M.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.Slusarczyk, M.Steinhauser, M.Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$Particle Physics - PhenomenologyCombining 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.Combining 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.hep-ph/0609232IFT-18-2006CERN-PH-TH-2006-184YERPHI-1608-6FREIBURG-THEP-06-13DFTT-20-2006SFB-CPP-06-45TTP06-26ZU-TH-22-06SLAC-PUB-12117DESY-06-168DESY-06-168DESY-2006-168CERN-PH-TH-2006-184IFT-2006-18YERPHI-1608-6Freiburg-THEP-2006-13DFTT-20-2006SFB-CPP-2006-45oai:cds.cern.ch:9853822006-09-22 |
| spellingShingle | Particle Physics - Phenomenology Misiak, M. Asatrian, H.M. 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. Slusarczyk, M. Steinhauser, M. Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$ |
| title | Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$ |
| title_full | Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$ |
| title_fullStr | Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$ |
| title_full_unstemmed | Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$ |
| title_short | Estimate of $BR(\overline{B} \to X_{s}\gamma)$ at $O(\alpha_{s^2})$ |
| title_sort | estimate of $br(\overline{b} \to x_{s}\gamma)$ at $o(\alpha_{s^2})$ |
| topic | Particle Physics - Phenomenology |
| url | https://dx.doi.org/10.1103/PhysRevLett.98.022002 http://cds.cern.ch/record/985382 |
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