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|a Zhao, M.
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|a Massachusetts Institute of Technology. Department of Physics
|e contributor
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|a Massachusetts Institute of Technology. Laboratory for Nuclear Science
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|a Fisher, Peter H.
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|a Zhao, M.
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|a Yamamoto, R. K.
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|a Taylor, Frank E.
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|a Spitznagel, M.
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|a Sciolla, Gabriella
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|a Dujmic, Denis
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|a Cowan, Ray Franklin
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|a Fisher, Peter H.
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|a Yamamoto, R. K.
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|a Taylor, Frank E.
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|a Spitznagel, M.
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|a Sciolla, Gabriella
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|a Dujmic, Denis
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|a Cowan, Ray Franklin
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|a Fisher, Peter H.
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|a Measurement of B-->X gamma Decays and Determination of |V[subscript td]/V[subscript ts]|
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|a Measurement of B→Xγ Decays and Determination of |Vtd/Vts|
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|b American Physical Society,
|c 2010-05-07T19:52:02Z.
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|z Get fulltext
|u http://hdl.handle.net/1721.1/54733
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|a 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.
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|a Science and Technology Facilities Council, United Kingdom
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|a MEC (Spain)
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|a Ministry of Education and Science of the Russian Federation
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|a Norges forskningsråd
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|a FOM of the Netherlands
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|a Istituto Nazionale di Fisica Nucleare of Italy
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|a Deutsche Forschungsgemeinschaft
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|a Bundesministerium für Bildung und Forschung, Germany
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|a Institut National de Physique Nucleaire et Physique des Particules/CNRS
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|a Commissariat à l'Energie Atomique
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|a Natural Sciences and Engineering Research Council of Canada
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|a National Science Foundation
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|a United States Department of Energy
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|a en_US
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|a Article
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|t Physical Review Letters
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