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arXiv · 0807.4205

Eta' gluonic content and J/psi->VP decays

R. Escribano
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Abstract

The $η$-$η^\prime$ pseudoscalar mixing angle and the gluonium content of the $η^\prime$ meson are deduced from an updated phenomenological analysis of $J/ψ$ decays into a vector and a pseudoscalar meson. The values for the mixing angle and the gluonic content of the $η^\prime$ wave function are $ϕ_P=(44.5\pm 4.3)^\circ$ and $Z^2_{η^\prime}=0.28\pm 0.21$, respectively.

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R. Escribano. 2008-07-25. Eta' gluonic content and J/psi->VP decays. https://doi.org/10.1016/j.nuclphysbps.2008.09.041

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