Photoproduction of Exotic Baryon Resonances

Understand

We point out that the new exotic resonances recently reported by LHCb in the $J/\psi p$ channel are excellent candidates for photoproduction off a proton target.

• This test is crucial to confirming the resonant nature of such states, as opposed to their being kinematical effects.
• We specialize to an interpretation of the heavier narrow state as a molecule composed of $\Sigma_c$ and $\bar D^*$, and estimate its production cross section using vector dominance.
• The relevant photon energies and fluxes are well within the capabilities of the GlueX and CLAS12 detectors at Thomas Jefferson National Accelerator Facility (JLAB).