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arxiv: hep-ph/0308099 · v2 · submitted 2003-08-08 · ✦ hep-ph

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The "forbidden" decays of hybrid mesons to π rho can be large

F.E. Close & J.J. Dudek
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classification ✦ hep-ph
keywords hybridhybridsargumentsbranchingchannelcompatiblecrossdecays
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The observation of $\pi_1(1600) \to \pi \rho$ is shown in the flux-tube model to be compatible with this state being a hybrid meson with branching ratio to this channel $\sim 30%$. The $\pi \rho$ widths of other hybrids are related by rather general arguments. These results enable cross sections for photoproduction of hybrids to be predicted.

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  1. Interaction and correlation functions for $\pi f_1(1285)$, $\eta f_1(1285)$

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    Using the fixed-center approximation, the π⁰(η) f₁(1285) interaction yields scattering parameters and correlation functions but no clear poles for the π₁(1400), π₁(1600), or η₁(1855) resonances, only a broad structure...