Nucleon Resonances with Hidden Charm in Coupled-Channel Models

Abstract

The model dependence of the predictions of nucleon resonances with hidden charm is investigated. We consider several coupled-channel models which are derived from relativistic quantum field theory by using (1) a unitary transformation method, and (2) the three-dimensional reductions of Bethe-Salpeter Equation. With the same vector meson exchange mechanism, we find that all models give very narrow molecular-like nucleon resonances with hidden charm in the mass range of 4.3 GeV $<M_R<$ 4.5 GeV, in consistent with the previous predictions.

17 pages, 3 figures

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