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Observation of exclusive Y(1S) and Y(2S) decays into light hadrons
Belle Collaboration
2012
发表期刊PHYSICAL REVIEW D
卷号86期号:3
通讯作者Shen, CP (reprint author), Nagoya Univ, Grad Sch Sci, Nagoya, Aichi 4648601, Japan.
摘要Using samples of 102 x 10(6) Gamma(1S) and 158 x 10(6) Gamma(2S) events collected with the Belle detector, we study exclusive hadronic decays of these two bottomonium resonances to the three-body final states phi K+K-, omega pi(+)pi(-) and K*(0)(892)K-pi(+), and to the two-body Vector-Tensor states (phi f'(2)(1525), omega f(2)(1270), rho a(2)(1320) and K*(0)(892)(K) over bar*(0)(2)(1430)) and Axial-vector-Pseudoscalar (K-1(1270)K-+(-), K-1(1400)K-+(-) and b(1)(1235)(+)pi(-)) states. Signals are observed for the first time in the Y(1S) -> phi K+K-, omega pi(+)pi(-), K*K-0(-)pi(+), K*K-0*(0)(2) Gamma(2S) -> phi K+K-, K*K-0(-)pi(+) decay modes. Branching fractions are determined for all the processes, while 90% confidence level upper limits are established on the branching fractions for the modes with a statistical significance less than 3 sigma. The ratios of the branching fractions of Gamma(2S) and Gamma(1S) decays into the same final state are used to test a perturbative QCD prediction for OZI-suppressed bottomonium decays.
关键词KEKB
学科领域Astronomy & Astrophysics; Physics
DOI10.1103/PhysRevD.86.031102
收录类别SCI
语种英语
WOS类目Astronomy & Astrophysics ; Physics, Particles & Fields
WOS记录号WOS:000307506200001
引用统计
被引频次:5[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/311005/213311
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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Belle Collaboration. Observation of exclusive Y(1S) and Y(2S) decays into light hadrons[J]. PHYSICAL REVIEW D,2012,86(3).
APA Belle Collaboration.(2012).Observation of exclusive Y(1S) and Y(2S) decays into light hadrons.PHYSICAL REVIEW D,86(3).
MLA Belle Collaboration."Observation of exclusive Y(1S) and Y(2S) decays into light hadrons".PHYSICAL REVIEW D 86.3(2012).
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