Study of B→Xγ decays and determination of |Vtd/Vts|
Author(s)
Dujmic, Denis; Sciolla, Gabriella; Fisher, Peter H; Cowan, Ray F; Zhao, M.
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Alternative title
Study of B→Xγ decays and determination of |V [subscript td] /V [subscript ts] |
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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).
Date issued
2010-09Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear ScienceJournal
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
ISSN
1550-7998
1550-2368