Exclusive measurements of b→sγ transition rate and photon energy spectrum
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Lees-2012-gamma transition rate and photon energy spectrum.pdf
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Date Issued
September 2012
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
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.
MIT Department
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.86.052012
