Discovery potential of hidden charm baryon resonances via photoproduction

Abstract

In this work, we study the possibility to find $N_{c\bar{c}}^{\ast }$ and ${\Lambda }_{c\bar{c}}^{\ast }$ 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 $N^{\ast }(4412)$ can be produced directly by photon excitation with total cross section about 1 nb. The $N^{\ast }(4412)$ 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.

arXiv comment14 pages,7 figures,3 tables

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• Revisiting hidden-charm pentaquarks from QCD sum rules
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• Systematic study on production of hidden-bottom pentaquark via $\gamma p$ and ${\pi }^{-}p$ scatterings
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• Semi-inclusive lepto-production of hidden-charm exotic hadrons
• Semi-inclusive electroproduction of hidden-charm and double-charm hadronic molecules
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• Hidden-charm Pentaquark Production at $e^{+}{e}^{-}$ Colliders
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• Pion-induced production of the $Z_c(3900)$ off a nuclear target
• The production of neutral $N^{\ast }(11052)$ resonance with hidden beauty from ${\pi }^{-}p$ scattering
• Regarding the possibility to observe the LHCb hidden-charm strange pentaquark $P_{cs}(4459{)}^0$ in antikaon-induced $J/\psi$ meson production on protons and nuclei near the $J/\psi$$\Lambda$ production threshold
• Revealing the inner structure of the newly observed ${\eta }_1(1855)$ via photoproduction
• Towards clarifying the possibility of observation of the LHCb hidden-charm pentaquarks $P_c^{+}(4312)$, $P_c^{+}(4337)$, $P_c^{+}(4440)$ and $P_c^{+}(4457)$ in near-threshold charmonium photoproduction off protons and nuclei
• Penta-quark States with Strangeness, Hidden Charm and Beauty
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