Estimate of B(B{yields}X{sub s}{gamma}) at O({alpha}{sub s}{sup 2})

Journal Article · Fri Jan 12 00:00:00 EST 2007 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.98.022002· OSTI ID:20861593

Misiak, M ^[1]; Asatrian, H M; Hovhannisyan, A; Poghosyan, V ^[2]; Bieri, K; Ewerth, T; Greub, C ^[3]; Czakon, M ^[4]; Czarnecki, A; Slusarczyk, M ^[5]; Ferroglia, A ^[6]; Gambino, P ^[7]; Gorbahn, M; Steinhauser, M ^[8]; Haisch, U ^[9]; Hurth, T ^[10]; Mitov, A ^[11]

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1. Institute of Theoretical Physics, Warsaw University, PL-00-681 Warsaw (Poland)
2. Yerevan Physics Institute, 375036 Yerevan (Armenia)
3. Institut fuer Theoretische Physik, Universitaet Bern, CH-3012 Bern (Switzerland)
4. Institut fuer Theoretische Physik und Astrophysik, Universitaet Wuerzburg, D-97074 Wuerzburg (Germany)
5. Department of Physics, University of Alberta, AB T6G 2J1 Edmonton (Canada)
6. Physikalisches Institut, Albert-Ludwigs-Universtitaet, D-79104 Freiburg (Germany)
7. INFN, Torino and Dipartimento di Fisica Teorica, Universita di Torino, I-10125 Torino (Italy)
8. Institut fuer Theoretische Teilchenphysik, Universitaet Karlsruhe (Thailand), D-76128 Karlsruhe (Germany)
9. Institut fuer Theoretische Physik, Universitaet Zuerich, CH-8057 Zuerich (Switzerland)
10. Theoretical Physics Division, CERN, CH-1211 Geneva 23 (Switzerland)
11. Deutsches Elektronen-Synchrotron DESY, D-15738 Zeuthen (Germany)

Combining our results for various O({alpha}{sub s}{sup 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 B(B{yields}X{sub s}{gamma})=(3.15{+-}0.23)x10{sup -4} for E{sub {gamma}}>1.6 GeV in the B-meson rest frame. The four types of uncertainties: nonperturbative (5%), parametric (3%), higher-order (3%), and m{sub c}-interpolation ambiguity (3%) have been added in quadrature to obtain the total error.

• OSTI ID: 20861593
• Journal Information: Physical Review Letters, Vol. 98, Issue 2; Other Information: DOI: 10.1103/PhysRevLett.98.022002; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
B MESONS
BRANCHING RATIO
CORRECTIONS
ERRORS
GEV RANGE 01-10
INTERPOLATION
PARTICLE DECAY
QUADRATURES
QUANTUM CHROMODYNAMICS