Exclusive measurements of b→sγ transition rate and photon energy spectrum
Author(s)
Dujmic, Denis; Sciolla, Gabriella
DownloadLees-2012-gamma transition rate and photon energy spectrum.pdf (413.1Kb)
PUBLISHER_POLICY
Publisher Policy
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.
Terms of use
Metadata
Show full item recordAbstract
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
2012-09Department
Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
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