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Inspired by the recent findings of the two $P_c^+$ states in the $J/\psi p$mass spectrum at LHCb, we investigate the elastic and inelastic cross sectionsof the $J/\psi N$, $\eta_c N$, $\Upsilon N$ and $\eta_b N$ channels within theconstraints from heavy quark spin and flavour symmetry. The $\bar{D}^{(*)}\Sigma_c^{(*)}$ ($B^{(*)} \Sigma_b^{(*)}$) bound states predicted in earlierworks should be accessible in elastic and/or inelastic processes of the $J/\psiN$ and/or $\eta_c N$ ($\Upsilon N$ and/or $\eta_b N$) interactions.

$J/\psi (\eta_c) N$ and $\Upsilon (\eta_b) N$ cross sections