Can the Mechanism for $π_1\to ηπ,η'π$ Hybrid Decays be Detected?

Details Can the Mechanism for $π_1\to ηπ,η'π$ Hybrid Decays be Detected? Can the Mechanism for $π_1\to ηπ,η'π$ Hybrid Decays be Detected?

2002-07-31

arxiv.org/abs/hep-ph/0207369v2

Phys.Rev.D67:074020,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, revtex, 1 eps figure embedded in manuscript. Analysis and references extended in v2

Scientific paper

10.1103/PhysRevD.67.074020

Two mechanisms for the $\pi_1$ ($J^{PC}=1^{-+}$) hybrid meson decay processes $\pi_1\to\eta\pi,\eta'\pi$ are investigated. These mechanisms are applied to $\phi\to\eta\gamma,\eta'\gamma$ and $J/\psi\to\eta\gamma,\eta'\gamma$ decays to illustrate the validity of the decay mechanisms and to obtain independent information on the coupling of $\eta,\eta'$ to quark and gluonic operators. From this information, we find that $\Gamma(\pi_1\to\eta\pi)/\Gamma(\pi_1\to\eta'\pi)$ is substantially different in the two decay mechanisms, and hence future experimental measurements of this ratio will provide valuable information for substantiating the hybrid nature of these states and for determining the mechanism for these hybrid decays.

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