Semi-inclusive lepto-production of hidden-charm exotic hadrons

Abstract

We investigate the semi-inclusive production of hidden-charm exotic states, including $X(3872)$, $Z_c$, $Z_{cs}$ and the pentaquark $P_c$ states, in lepton-proton scattering processes. These hadrons are close to the thresholds of a pair of charm and anticharm hadrons, and are assumed to have hadronic molecular structure as their main components. In order to give order-of-magnitude estimates of the cross sections, we use Pythia to simulate the short-distance productions of the constituent hadrons, which then rescatter to form the exotic hadrons. The estimates for the $X(3872)$ and $Z_c(3900{)}^{\pm }$ are not in conflict with the upper limits measured at the COMPASS experiment for the exclusive photoproduction process. The results here indicate that the considered hidden-charm states can be copiously produced at the proposed electron-ion colliders EicC and US-EIC.

15 pages, 2 figures, version accepted by Chinese Physics C

References in corpus (30)

• PYTHIA 6.4 Physics and Manual
• Multiquark Resonances
• Pentaquark and Tetraquark states
• Observation of a narrow pentaquark state, $P_c(4312{)}^{+}$, and of two-peak structure of the $P_c(4450{)}^{+}$
• The COMPASS Experiment at CERN
• Electron-Ion Collider in China
• Emergence of a complete heavy-quark spin symmetry multiplet: seven molecular pentaquarks in light of the latest LHCb analysis
• Is the X(3872) Production Cross Section at Tevatron Compatible with a Hadron Molecule Interpretation?
• The Heavy Quark Spin Symmetry Partners of the X(3872)
• Observation of a near-threshold structure in the $K^{+}$ recoil-mass spectra in $e^{+}{e}^{-}\to K^{+}(D_s^{-}{D}^{\ast 0}+D_s^{\ast -}{D}^0)$
• Heavy quark spin symmetric molecular states from ${\bar{D}}^{(\ast )}{\Sigma }_c^{(\ast )}$ and other coupled channels in the light of the recent LHCb pentaquarks
• Interpretation of the LHCb $P_c$ States as Hadronic Molecules and Hints of a Narrow $P_c(4380)$
• New Hadron States
• Hidden-charm and hidden-bottom molecular pentaquarks in chiral perturbation theory
• Revisiting the nature of the $P_c$ pentaquarks
• Studying the P_c(4450) resonance in J/psi photoproduction off protons
• Strange molecular partners of the $Z_c(3900)$ and $Z_c(4020)$
• Deciphering the mechanism of near-threshold $J/\psi$ photoproduction
• Search for tetraquark candidate Z(4430) in meson photoproduction
• Possibility to study pentaquark states $P_c(4312),P_c(4440)$, and $P_c(4457)$ in $\gamma p\to J/\psi p$ reaction
• Estimating the Production Rate of Loosely-bound Hadronic Molecules using Event Generators
• The strange partner of the $Z_c$ structures in a coupled-channels model
• Note on X(3872) production at hadron colliders and its molecular structure
• Production of $X(3872)$ at High Multiplicity
• XYZ spectroscopy at electron-hadron facilities: Exclusive processes
• Search for exclusive photoproduction of Z${}_c^{\pm }$(3900) at COMPASS
• Photoproduction of strange hidden-charm and hidden-bottom states
• Photoproduction of Z(4430) through mesonic Regge trajectories exchange
• Production of charm-strange hadronic molecules at the LHC
• Identify the hidden charm pentaquark signal from non-resonant background in electron-proton scattering

Cited by in corpus (11)

• An updated review of the new hadron states
• Electron-Ion Collider in China
• Novel approaches in Hadron Spectroscopy
• Understanding the $0^{++}$ and $2^{++}$ charmonium(-like) states near 3.9 GeV
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• XYZ spectroscopy at electron-hadron facilities II: Semi-inclusive processes with pion exchange
• Semi-inclusive electroproduction of hidden-charm and double-charm hadronic molecules
• XYZ spectroscopy at electron-hadron facilities III: Semi-inclusive processes with vector exchanges
• Photoproduction of the $X(3872)$ beyond vector meson dominance: the open-charm coupled-channel mechanism
• Hunting for the heavy quark spin symmetry partner of $Z_{cs}$
• Production of hidden-heavy and double-heavy hadronic molecules at the $Z$ factory of CEPC