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Determinations of vertical bar V-ub vertical bar from inclusive semileptonic B decays with reduced model dependence
BaBar Collaboration
2006
发表期刊PHYSICAL REVIEW LETTERS
卷号96期号:22
通讯作者Aubert, B (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France.
摘要We report two novel determinations of vertical bar V-ub vertical bar with reduced model dependence, based on measurements of the mass distribution of the hadronic system in semileptonic B decays. Events are selected by fully reconstructing the decay of one B meson and identifying a charged lepton from the decay of the other B meson from Y(4S) -> B (B) over bar events. In one approach, we combine the inclusive (B) over bar -> X(u)l (v) over bar rate, integrated up to a maximum hadronic mass m(X) < 1.67 GeV/c(2), with a measurement of the inclusive B -> X-s gamma photon energy spectrum. We obtain vertical bar V-ub vertical bar = (4.43 +/- 0.38(stat) +/- 0.25(syst) +/- 0.29(theo)) x 10(-3). In another approach we measure the total (B) over bar -> X(u)l (v) over bar rate over the full phase space and find vertical bar V-ub vertical bar = 3.84 +/- 0.70(stat) +/- 0.30(syst) +/- 0.10(theo)) x 10(-3).
关键词MESON DECAYS HIGH-ENERGY SPECTRUM PHYSICS
学科领域Physics
DOI10.1103/PhysRevLett.96.221801
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000238161400013
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/212666
专题实验物理中心
作者单位中国科学院高能物理研究所
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BaBar Collaboration. Determinations of vertical bar V-ub vertical bar from inclusive semileptonic B decays with reduced model dependence[J]. PHYSICAL REVIEW LETTERS,2006,96(22).
APA BaBar Collaboration.(2006).Determinations of vertical bar V-ub vertical bar from inclusive semileptonic B decays with reduced model dependence.PHYSICAL REVIEW LETTERS,96(22).
MLA BaBar Collaboration."Determinations of vertical bar V-ub vertical bar from inclusive semileptonic B decays with reduced model dependence".PHYSICAL REVIEW LETTERS 96.22(2006).
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