Discovery potential of hidden charm baryon resonances via photoproduction

TL;DR

This paper predicts the production of hidden charm baryon resonances via photon-induced reactions, highlighting the potential to observe the $N^*(4412)$ resonance near threshold at JLab 12 GeV and future colliders.

Contribution

It introduces a theoretical prediction of hidden charm baryon resonance production cross sections using an effective Lagrangian approach with vector meson dominance.

Findings

The $N^*(4412)$ resonance can be produced with a cross section of about 1 nb.

A clear peak near threshold in $J/A$ photoproduction is predicted.

Results support future experimental searches at JLab 12 GeV and other colliders.

Abstract

In this work, we study the possibility to find $N^*_{c\bar{c}}$ and $\Lambda^*_{c\bar{c}}$ resonances with hidden charm with mass above 4 GeV in the photon-induced production. The cross sections for the photoproductions of hidden charmed baryons are predicted in the effective Lagrangian approach with the vector meson dominance mechanism. The $N^*(4412)$ can be produced directly by photon excitation with total cross section about 1 nb. The $N^*(4412)$ provides a obvious peak near threshold for $J/\psi$ photoproduction, which is promising to be checked by the future high precision experiment at JLab 12 GeV. The results will be helpful to the experimental search for the hidden-charmed baryon resonances in the coming experiment at JLab 12 GeV, such as SoLID, and the proposed electron-ion colliders at FAIR and HIAF.