Pseudoscalar mixing in J/ψ and ψ(2<EM>S</EM>) decay

WEI Dai-Hui; YANG Yong-Xu

doi:10.1088/1674-1137/34/12/002

Chinese Physics C> 2010, Vol. 34> Issue(12) : 1785-1790 DOI: 10.1088/1674-1137/34/12/002

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

WEI Dai-Hui ^, ,
YANG Yong-Xu

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Abstract：
Based on the branching fractions of J/ψ(ψ(2S))→VP from different collaborations, pseudoscalar mixing is extensively discussed with a well established phenomenological model. The mixing angle is determined to be －14° by fitting to the new world average if only quark content is considered. After taking into account the gluonic content in η and η′ simultaneously, the investigation shows that η favors only consisting of light quarks, while the gluonic content of η′ is Z_η′²=0.30±0.24.

References

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WEI Dai-Hui and YANG Yong-Xu. Pseudoscalar mixing in J/ψ and ψ(2S) decay[J]. Chinese Physics C, 2010, 34(12): 1785-1790. doi: 10.1088/1674-1137/34/12/002

WEI Dai-Hui and YANG Yong-Xu. Pseudoscalar mixing in J/ψ and ψ(2S) decay[J]. Chinese Physics C, 2010, 34(12): 1785-1790. doi: 10.1088/1674-1137/34/12/002 shu

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Received: 2010-07-23
Revised: 2010-08-17

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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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

Corresponding author: WEI Dai-Hui,

Received Date: 2010-07-23

Accepted Date: 2010-08-17

Available Online: 2010-12-05

Abstract:

Based on the branching fractions of J/ψ(ψ(2S))→VP from different collaborations, pseudoscalar mixing is extensively discussed with a well established phenomenological model. The mixing angle is determined to be －14° by fitting to the new world average if only quark content is considered. After taking into account the gluonic content in η and η′ simultaneously, the investigation shows that η favors only consisting of light quarks, while the gluonic content of η′ is Z_η′²=0.30±0.24.

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

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

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