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

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BABAR Collaboration (Including:

Aubert, B., Bona, M., Karyotakis, Y., Lees, J. P., Poireau, V., Prencipe, E., Prudent, X., Tisserand, V., Tico, J. Garra, Grauges, E. et al.
). (2009) Measurement of B -> X gamma Decays and Determination of |V-td/V-ts|. Physical Review Letters, Vol.102 (No.16). article no. 161803. doi:10.1103/PhysRevLett.102.161803 ISSN 0031-9007.

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Official URL: http://dx.doi.org/10.1103/PhysRevLett.102.161803

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Abstract

Using a sample of 383x10(6) BB events collected by the BABAR experiment, we measure sums of seven exclusive final states B -> X-d(s)gamma, where X-d(X-s) is a nonstrange (strange) charmless hadronic system in the mass range 0.6-1.8 GeV/c(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))x10(-6). Taking the ratio of X-d to X-s we find Gamma(b -> d gamma)/Gamma(b -> s gamma)=0.033 +/- 0.013(stat)+/- 0.009(syst), from which we determine |V-td/V-ts|=0.177 +/- 0.043.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Divisions: Faculty of Science, Engineering and Medicine > Science > Physics
Journal or Publication Title: Physical Review Letters
Publisher: American Physical Society
ISSN: 0031-9007
Official Date: 24 April 2009
Dates:
DateEvent
24 April 2009Published
Volume: Vol.102
Number: No.16
Number of Pages: 7
Page Range: article no. 161803
DOI: 10.1103/PhysRevLett.102.161803
Status: Peer Reviewed
Publication Status: Published
Funder: DOE and NSF (USA), NSERC (Canada), CEA, BMBF, DFG (Germany), INFN (Italy), FOM (The Netherlands), NFR (Norway), MES (Russia), MEC (Spain), Science and Technology Facilities Council (Great Britain) (STFC), Marie Curie EIF (European Union), A. P. Sloan Foundation
Grant number: CNRS-IN2P3

Data sourced from Thomson Reuters' Web of Knowledge

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