Measurement of B-->X gamma Decays and Determination of |V[subscript td]/V[subscript ts]|
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Aubert-2009-Measurement of B -_.pdf
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Author(s)
Zhao, M.
Yamamoto, R. K.
Sciolla, Gabriella
Dujmic, Denis
Taylor, Frank E
Spitznagel, Michael A
Cowan, Ray F
Fisher, Peter H
Alternative Title
Measurement of B→Xγ Decays and Determination of |Vtd/Vts|
Date Issued
April 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
BABAR Collaboration et al. “Measurement of B-->X gamma Decays and Determination of |Vtd/Vts|.” Physical Review Letters 102.16 (2009): 161803. © 2009 The American Physical Society.
Version
Final published version
Abstract
Using a sample of 383×106 B[bar-over B] events collected by the BABAR experiment, we measure sums of seven exclusive final states B→X[subscript d(s)]gamma, where X[subscript d](X[subscript s]) is a nonstrange (strange) charmless hadronic system in the mass range 0.6–1.8 GeV/c[superscript 2]. After correcting for unmeasured decay modes in this mass range, we obtain a branching fraction for b-->d gamma of (7.2±2.7(stat)±2.3(syst))×10[superscript -6]. Taking the ratio of X[subscript d] to X[subscript s] we find Gamma(b→dγ)/Gamma(b→sγ)=0.033±0.013(stat)±0.009(syst), from which we determine |V[subscript td]/V[subscript ts]|=0.177±0.043.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.102.161803
