ω-mixing model for the production of nonhadronicψ's

Abstract

We develop a simple, plausible model for the photoproduction and hadronic production of the $\psi \mathrm{}\left(3100\right)\mathrm{}$ under the assumption that this state is not a hadron. In particular, we find the cross section $\sigma (\gamma N\to \psi N)\lesssim 3$ nb. Experimental results in this range will not unambiguously determine whether the $\psi$ is a hadron.