Study of B→Xγ decays and determination of |Vtd/Vts|
Using a sample of 471×10[superscript 6] BB̅ events collected with the BABAR detector, we study the sum of seven exclusive final states B→X[subscript s(d)]γ [gamma], where X[subscript s(d)] is a strange (nonstrange) hadronic system with a mass of up to 2.0 GeV/c[superscript 2]. After correcting for...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
| Published: |
American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/61336 https://orcid.org/0000-0002-8667-5660 |
| Summary: | Using a sample of 471×10[superscript 6] BB̅ events collected with the BABAR detector, we study the sum of seven exclusive final states B→X[subscript s(d)]γ [gamma], where X[subscript s(d)] is a strange (nonstrange) hadronic system with a mass of up to 2.0 GeV/c[superscript 2]. After correcting for unobserved decay modes, we obtain a branching fraction for b→dγ of (9.2±2.0(stat)±2.3(syst))×10[superscript -6] in this mass range, and a branching fraction for b→sγ of (23.0±0.8(stat)±3.0(syst))×10[superscript -5] in the same mass range. We find B [beta][subscript(b→dγ)]/B[beta][subscript(b→sγ)] =0.040±0.009(stat)±0.010(syst), from which we determine |V[subscript td] /V[subscript ts]|=0.199±0.022(stat)±0.024(syst)±0.002(th). |
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