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Measurement of the branching fraction of Upsilon(4S)->(BB0)-B-0
BABAR Collaboration
2005
发表期刊PHYSICAL REVIEW LETTERS
卷号95期号:4页码:42001
通讯作者Aubert, B (reprint author), Phys Particules Lab, F-74941 Annecy Le Vieux, France.
文章类型Article
摘要We report the first measurement of the branching fraction f(00) for Upsilon(4S) -> B-0(B) over bar (0). The data sample consists of 81.7 fb(-1) collected at the Upsilon(4S) resonance with the BABAR detector at the SLAC PEP-II asymmetric-energy e(+)e(-) storage ring. Using partial reconstruction of the decay (B) over bar (0) -> D(*+)l(-)<(nu)over bar >(l) in which only the charged lepton and the soft pion from the decay D*+ -> D(0)pi(+) are reconstructed, we obtain f(00) = 0.487 +/- 0.010(stat) +/- 0.008(syst). Our result does not depend on the branching fractions of (B) over bar (0) -> D(*+)l(-)<(nu)over bar >(l) and D*+ -> D(0)pi(+) decays, on the ratio of the charged and neutral B meson lifetimes, nor on the assumption of isospin symmetry.
学科领域Physics
DOI10.1103/PhysRevLett.95.042001
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000230680000020
引用统计
被引频次:467[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227899
专题实验物理中心
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BABAR Collaboration. Measurement of the branching fraction of Upsilon(4S)->(BB0)-B-0[J]. PHYSICAL REVIEW LETTERS,2005,95(4):42001.
APA BABAR Collaboration.(2005).Measurement of the branching fraction of Upsilon(4S)->(BB0)-B-0.PHYSICAL REVIEW LETTERS,95(4),42001.
MLA BABAR Collaboration."Measurement of the branching fraction of Upsilon(4S)->(BB0)-B-0".PHYSICAL REVIEW LETTERS 95.4(2005):42001.
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