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

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

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...

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Bibliographic Details
Main Authors: Zhao, M., Yamamoto, R. K., Sciolla, Gabriella, Dujmic, Denis, Taylor, Frank E, Spitznagel, Michael A, Cowan, Ray F, Fisher, Peter H
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2010
Online Access:http://hdl.handle.net/1721.1/54733
https://orcid.org/0000-0002-7586-7253
https://orcid.org/0000-0002-8667-5660
Description
Summary: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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