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J/ψ衰变中赝标量介子混合的研究 被引量:1

Pseudoscalar-Meson Mixing in J/ψ Decays
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摘要 利用PDG 2 0 0 0公布的J ψ→VP ,γP各个衰变道分支比的世界平均值 ,对赝标量介子混合重新做了分析 .如果 η和 η′中不含有胶子成分 ,则得到它们的混合角θP=( - 19.18± 0 .91)° .对J ψ衰变中DOZI的贡献、SU( 3)破坏以及矢量介子的混合也做了讨论和分析 . Based on the bracnhing fractions of J/ψ→VP, γP quoted in PDG-2000, we reexamined the quark content of pseudoscalars. If there is no gluonium content in η and η′, the mixing angle θ P=(-19.18±0.91)°. We also present a discussion for DOZI contribution, SU(3) breaking and scalar-meson mixing.
出处 《高能物理与核物理》 CSCD 北大核心 2003年第6期484-488,共5页 High Energy Physics and Nuclear Physics
基金 国家自然科学基金 ( 199914 82 ) 中国科学院重大项目基金 (KJ95T -0 3)资助~~
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同被引文献17

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