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A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson
KLOE Collaboration
2009
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号7
通讯作者Di Micco, B (reprint author), Univ Roma Tre, Dipartimento Fis, Via Vasca Navale 84, Rome, Italy.
摘要We update the values of the eta-eta' mixing angle and of the eta' gluonium content by fitting our measurement R(phi) = BR(phi -> eta gamma)/BR(phi -> eta gamma) together with several vector meson radiative decays to pseudoscalars (V -> P gamma), pseudoscalar mesons radiative decays to vectors (P -> V gamma) and the eta' -> gamma gamma, pi(0) -> gamma gamma widths. From the fit we extract a gluonium fraction of Z(G)(2) = 0.12 +/- 0.04, the pseudoscalar mixing angle psi(P) = (40.4 +/- 0.6)degrees and the phi - omega mixing angle psi(V) = (3.32 +/- 0.09)degrees. Z(G)(2) and psi(P) are fairly consistent with those previously published. We also evaluate the impact on the eta' gluonium content determination of future experimental improvements of the eta' branching ratios and decay width.
关键词PARTICLE PHYSICS KLOE DETECTOR
学科领域Physics
DOI10.1088/1126-6708/2009/07/105
收录类别SCI
语种英语
WOS类目Physics, Particles & Fields
WOS记录号WOS:000270219900105
引用统计
被引频次:66[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/311005/212907
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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KLOE Collaboration. A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson[J]. JOURNAL OF HIGH ENERGY PHYSICS,2009(7).
APA KLOE Collaboration.(2009).A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson.JOURNAL OF HIGH ENERGY PHYSICS(7).
MLA KLOE Collaboration."A global fit to determine the pseudoscalar mixing angle and the gluonium content of the eta ' meson".JOURNAL OF HIGH ENERGY PHYSICS .7(2009).
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