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Measurement of the Decay B-s(0) -> D-s(-)pi(+) and Evidence for B-s(0) -> (DsK +/-)-K--/+ in e(+) e(-) Annihilation at root s approximate to 10.87 GeV
Belle Collaboration
2009
发表期刊PHYSICAL REVIEW LETTERS
卷号102期号:2
通讯作者Louvot, R (reprint author), Budker Inst Nucl Phys, Novosibirsk, Russia.
摘要We have studied B-s(0) -> D-s(-)pi(+) and B-s(0) -> (DsK +/-)-K--/+ decays using 23.6 fb(-1) of data collected at the Y(5S) resonance with the Belle detector at the KEKB e(+) e(-) collider. This highly pure B-s(0) -> D-s(-)pi(+) sample is used to measure the branching fraction, B(B-s(0) -> D-s(-)pi(+)) = [3.67(-0.33)(+0.35)(stat)(-0.42)(+0.43)(syst) +/- 0.49(f(s))] x 10(-3) (f(s) = N-Bs(*)(B) over bars(*)/N-b (b) over bar and the fractions of B-s(0) event types at the Y(d5S) energy, in particular N-Bs(*)(B) over bars(*)/N-Bs(*)(B) over bars(*) = (90.1(-4.0)(+3.8) +/- 0.2)%. We also determine the masses M(B-s(0)) = (5364.4 +/- 1.3 +/- 0.7) MeV/c(2) and M(B-s*) = (5416.4 +/- 0.4 +/- 0.5) MeV/c(2). In addition, we observe B-s(0) -> (DsK +/-)-K--/+ decays with a significance of 3.5 sigma and measure B(B-s(0) -> (DsK +/-)-K--/+) = [2.4-1.0+1.2(stat) +/- 0.3(syst) +/- 0.3(f(s))] x 10(-4).
关键词PHYSICS
学科领域Physics
DOI10.1103/PhysRevLett.102.021801
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000262535900016
引用统计
被引频次:42[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/311005/212886
专题实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
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Belle Collaboration. Measurement of the Decay B-s(0) -> D-s(-)pi(+) and Evidence for B-s(0) -> (DsK +/-)-K--/+ in e(+) e(-) Annihilation at root s approximate to 10.87 GeV[J]. PHYSICAL REVIEW LETTERS,2009,102(2).
APA Belle Collaboration.(2009).Measurement of the Decay B-s(0) -> D-s(-)pi(+) and Evidence for B-s(0) -> (DsK +/-)-K--/+ in e(+) e(-) Annihilation at root s approximate to 10.87 GeV.PHYSICAL REVIEW LETTERS,102(2).
MLA Belle Collaboration."Measurement of the Decay B-s(0) -> D-s(-)pi(+) and Evidence for B-s(0) -> (DsK +/-)-K--/+ in e(+) e(-) Annihilation at root s approximate to 10.87 GeV".PHYSICAL REVIEW LETTERS 102.2(2009).
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