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Exclusive measurements of b→sγ transition rate and photon energy spectrum

Author(s)
Dujmic, Denis; Sciolla, Gabriella
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Abstract
We use 429  fb[superscript -1] of e[superscript +]e[superscript -] collision data collected at the Υ(4S) resonance with the BABAR detector to measure the radiative transition rate of b→sγ with a sum of 38 exclusive final states. The inclusive branching fraction with a minimum photon energy of 1.9 GeV is found to be B(B̅ →X[subscript s]γ)=(3.29±0.19±0.48)×10[superscript -4] where the first uncertainty is statistical and the second is systematic. We also measure the first and second moments of the photon energy spectrum and extract the best-fit values for the heavy-quark parameters, m[subscript b] and μ[subscript π][superscript 2], in the kinetic and shape function models.
Date issued
2012-09
URI
http://hdl.handle.net/1721.1/76325
Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
Lees, J. et al. “Exclusive Measurements of B→sγ Transition Rate and Photon Energy Spectrum.” Physical Review D 86.5 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
0031-9007
1079-7114

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