Update of eta-eta' mixing from J/psi->VP decays

Details Update of eta-eta' mixing from J/psi->VP decays Update of eta-eta' mixing from J/psi->VP decays

2008-02-26

arxiv.org/abs/0802.3909v1

AIPConf.Proc.1030:368-373,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, uses aipproc style. Talk presented at SCADRON 70: Workshop on "Scalar Mesons and Related Topics", Lisbon, Portugal, 1

Scientific paper

10.1063/1.2973529

The $\eta$-$\eta^\prime$ mixing angle is deduced from an updated phenomenological analysis of $J/\psi$ decays into a vector and a pseudoscalar meson. Corrections due to non-ideal $\omega$-$\phi$ mixing are confirmed to be crucial to find $\theta_P=(-16.9\pm 1.7)^\circ$, in agreement with most recent analyses. The newly reported values of $B(J/\psi\to\rho\pi)$ by the BABAR and BES Collaborations make more difficult a reasonable description of data.

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