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

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

2010-08-17

arxiv.org/abs/1008.2829v1

Chin.Phys.C34:1785-1790,2010

Physics

High Energy Physics

High Energy Physics - Experiment

8 pages

Scientific paper

10.1088/1674-1137/34/12/002

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.

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