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两个角度描述的η-η′混合的研究

Study of the η-η′System in the Two Mixing Angle Scheme
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摘要 根据PDG-2004给出的J/ψ→VP各衰变道的分支比的世界平均值,利用对能量有依赖的η-η′混合角方案,对赝标量介子混合重新作了分析,由此得到η和η′的混合角θη=(-9.0±4.9)°,ηθ′=(-20.8±3.0)°.对J/ψ衰变中DOZI的贡献和SU(3)破坏也作了讨论和分析. Based on the branching fractions of J/ψ→VP VP quoted in PD-2004, we make a new analysis to the mixing of pseudoscalars using an energy-dependent η-η′ mixing angle scheme. The mixing angle is determined to be θη=(-9.0±4.9)°and θη′=(-20.8±3.0)°,respectively. We also present a discussion for DOZI contribution and SU(3) breaking.
出处 《河南师范大学学报(自然科学版)》 CAS CSCD 北大核心 2006年第4期50-54,共5页 Journal of Henan Normal University(Natural Science Edition)
基金 国家自然科学基金资助项目(10575029)
关键词 衰变振幅 混合角 (3)破坏 mixing angle pseudoscalar mixing SU (3) breaking
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参考文献18

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