Mixing of eta-eta' Mesons in J/psi Decays into a Vector and a Pseudoscalar Meson

Details Mixing of eta-eta' Mesons in J/psi Decays into a Vector and a Pseudoscalar Meson Mixing of eta-eta' Mesons in J/psi Decays into a Vector and a Pseudoscalar Meson

1997-03-13

arxiv.org/abs/hep-ph/9703313v1

Phys.Lett. B403 (1997) 339-343

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages, LaTeX, full postscript file available via anonymous ftp at ftp://ftp.ifae.es/preprint/ft/uabft412.ps

Scientific paper

10.1016/S0370-2693(97)00508-X

The octet-singlet mixing angle $\theta_P$ in the pseudoscalar meson nonet is deduced from the rich set of accurate data on $J/\psi$ decays into a vector and a pseudoscalar meson. Corrections due to non-ideal $\omega$-$\phi$ mixing have been included for the first time and turn out to be crucial to find $\theta_P = -16.9 \pm 1.7$ degrees, which is appreciably less negative than previous results coming from similar analyses.

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