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

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

2008-07-25

arxiv.org/abs/0807.4205v1

Nucl.Phys.Proc.Suppl.181-182:226-230,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, uses espcrc2 style. Talk presented at the International Workshop on e+e- collisions from Phi to Psi (PHIPSI08), Labor

Scientific paper

10.1016/j.nuclphysbps.2008.09.04

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

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