Study of B→Xγ decays and determination of |Vtd/Vts|
Name
Sanchez-2010-Study of B -_ X gamm.pdf
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Author(s)
Dujmic, Denis
Sciolla, Gabriella
Fisher, Peter H
Cowan, Ray F
Zhao, M.
Alternative Title
Study of B→Xγ decays and determination of |V [subscript td] /V [subscript ts] |
Date Issued
September 2010
Journal
Physical review D
Publisher
American Physical Society
Citation
del Amo Sanchez, P. et al. “Study of B→Xγ decays and determination of |V_{td}/V_{ts}|.” Physical Review D 82.5 (2010): n. pag. © 2010 The American Physical Society
Version
Final published version
Abstract
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).
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.82.051101
