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http://hdl.handle.net/2445/138267
Title: | Measurement of B→Xγ Decays and Determination of |Vtd/Vts| |
Author: | Garra Ticó, Jordi Graugés Pous, Eugeni BABAR Collaboration |
Keywords: | Física de partícules Experiments Particle physics Experiments |
Issue Date: | 23-Apr-2009 |
Publisher: | American Physical Society |
Abstract: | Using a sample of 383 × 10 6 B ¯¯¯ B events collected by the BABAR experiment, we measure sums of seven exclusive final states B → X d ( s ) γ , 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 γ of ( 7.2 ± 2.7 ( stat ) ± 2.3 ( syst ) ) × 10 − 6 . Taking the ratio of X d to X s we find Γ ( b → d γ ) / Γ ( b → s γ ) = 0.033 ± 0.013 ( stat ) ± 0.009 ( syst ) , from which we determine | V t d / V t s | = 0.177 ± 0.043 . |
Note: | Reproducció del document publicat a: https://doi.org/10.1103/PhysRevLett.102.161803 |
It is part of: | Physical Review Letters, 2009, vol. 102, num. 16, p. 161803 |
URI: | http://hdl.handle.net/2445/138267 |
Related resource: | https://doi.org/10.1103/PhysRevLett.102.161803 |
ISSN: | 0031-9007 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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