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arXiv 1008.2829hep-ex
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J/psi和psi(2S)衰变中的赝标混合

Pseudoscalar mixing in J/psi and psi(2S) decay

Wei Daihui, Yang Yongxu

摘要:

基于不同合作组的J/psi(psi(2S))-> VP分支分数,利用一个已建立的唯象模型对赝标混合进行了广泛的讨论.在只考虑夸克含量的情况下,通过拟合新的世界平均值,确定混合角为-14度。在同时考虑了eta和eta素数中的胶子含量后,研究表明eta更倾向于只由轻夸克组成,而eta素数的胶子含量为Z_{eta prime} ^2=0.30 \pm 0.24.

英文摘要:

Based on the branching fractions of J/psi(psi(2S))-> VP from different collaborations, the pseudoscalar mixing is extensively discussed with a well established phenomenological model. The mixing angle is determined to be -14 degree by fitting to the new world average if only quark content is considered. After taking into account the gluonic content in eta and eta prime simultaneously, the investigation shows that eta favors only consisting of light quarks, while the gluonic content of eta prime is Z_{eta prime}^2=0.30\pm0.24.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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