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Measurement of B-->X gamma Decays and Determination of |V[subscript td]/V[subscript ts]|

Author(s)
Zhao, M.; Yamamoto, R. K.; Taylor, Frank E.; Spitznagel, M.; Sciolla, Gabriella; Dujmic, Denis; Cowan, Ray Franklin; Fisher, Peter H.; ... Show more Show less
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Alternative title
Measurement of B→Xγ Decays and Determination of |Vtd/Vts|
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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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.
Date issued
2009-04
URI
http://hdl.handle.net/1721.1/54733
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
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
ISSN
0031-9007

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