Photoproduction of Exotic Baryon Resonances

Abstract

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 ${\bar{D}}^{\ast }$, 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). A corresponding calculation is also performed for photoproduction of an analogous resonance which is predicted to exist in the ${\rm Y}p$ channel.

8 pages, 2 figures, accepted for publication in Physics Letters B

References in corpus (5)

• Big-Bang Nucleosynthesis
• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
• Formation of hidden-charm pentaquarks in photon-nucleon collisions
• Photoproduction of hidden charm pentaquark states $P_c^{+}(4380)$ and $P_c^{+}(4450)$

Cited by in corpus (81)

• Hadronic molecules
• The hidden-charm pentaquark and tetraquark states
• The $XYZ$ states: experimental and theoretical status and perspectives
• Non-Standard Heavy Mesons and Baryons, an Experimental Review
• Exotics: Heavy Pentaquarks and Tetraquarks
• Electron-Ion Collider in China
• New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
• Threshold cusps and triangle singularities in hadronic reactions
• Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules
• 50 Years of Quantum Chromodynamics
• Analysis of the $P_c(4380)$ and $P_c(4450)$ as pentaquark states in the diquark model with QCD sum rules
• First measurement of near-threshold J/$\psi$ exclusive photoproduction off the proton
• Exotic hadrons: review and perspectives
• Interpretation of the LHCb $P_c$ States as Hadronic Molecules and Hints of a Narrow $P_c(4380)$
• Pentaquark states in a diquark-triquark model
• Diquark Correlations in Hadron Physics: Origin, Impact and Evidence
• Looking for a hidden-charm pentaquark state with strangeness $S=-1$ from ${\Xi }_b^{-}$ decay into $J/\psi K^{-}\Lambda$
• On LHCb pentaquarks as a baryon-psi(2S) bound state -- prediction of isospin 3/2 pentaquarks with hidden charm
• Studying the P_c(4450) resonance in J/psi photoproduction off protons
• Selected Science Opportunities for the EicC
• Remarks on the $P_c$ structures and triangle singularities
• Analysis of the ${\frac{1}{2}}^{\pm }$ pentaquark states in the diquark model with QCD sum rules
• Deciphering the mechanism of near-threshold $J/\psi$ photoproduction
• The ${\Lambda }_b\to J/\psi K^0\Lambda$ reaction and a hidden-charm pentaquark state with strangeness
• Strong decay mode $J/\psi p$ of hidden charm pentaquark states $P_c^{+}(4380)$ and $P_c^{+}(4450)$ in ${\Sigma }_c{\bar{D}}^{\ast }$ molecular scenario
• Analysis of the ${\frac{1}{2}}^{\pm }$ pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
• Coupled channel analysis of molecule picture of $P_c(4380)$
• Measurement of the J/$\psi$ photoproduction cross section over the full near-threshold kinematic region
• A hidden-charm $S=-1$ pentaquark from the decay of ${\Lambda }_b$ into $J/\psi \eta \Lambda$
• QCD sum rule study of hidden-charm pentaquarks
• Possibility to study pentaquark states $P_c(4312),P_c(4440)$, and $P_c(4457)$ in $\gamma p\to J/\psi p$ reaction
• Probing hidden-charm decay properties of $P_c$ states in a molecular scenario
• Hidden-charm pentaquarks and their hidden-bottom and $B_c$-like partner states
• Nucleon Resonances with Hidden Charm in $\gamma p$ reactions
• $P_c(4312{)}^{+}$, $P_c(4380{)}^{+}$, and $P_c(4457{)}^{+}$ as double triangle cusps
• A hidden-charm pentaquark state in ${\Lambda }_b^0\to J/\psi p{\pi }^{-}$ decay
• Confronting pentaquark photoproduction with new LHCb observations
• Novel approaches in Hadron Spectroscopy
• Hidden charm pentaquarks: mass spectrum, magnetic moments, and photocouplings
• Analysis of the ${\frac{3}{2}}^{\pm }$ pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
• XYZ spectroscopy at electron-hadron facilities: Exclusive processes
• Do the $P_c^{+}$ Pentaquarks Have Strange Siblings?
• Neutral hidden charm pentaquark states $P_c^0(4380)$ and $P_c^0(4450)$ in ${\pi }^{-}p\to J/\psi n$ reaction
• Double Polarization Observables in Pentaquark Photoproduction
• Pion-induced production of hidden-charm pentaquarks $P_c(4312),P_c(4440)$, and $P_c(4457)$
• Understanding the nature of the heavy pentaquarks and searching for them in pion-induced reactions
• Photoproduction of hidden-bottom pentaquark and related topics
• Strong decay patterns of the hidden-charm pentaquark states $P_c(4380)$ and $P_c(4450)$
• Photoproduction of strange hidden-charm and hidden-bottom states
• Heavy pentaquark states $P_c(4380)$ and $P_c(4450)$ in the $J/\psi$ production induced by pion beams off the nucleon
• Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays
• The role of hidden-charm pentaquark resonance $P_c^{+}(4450)$ in $J/\psi$ photoproduction on nuclei near threshold
• Systematic study on production of hidden-bottom pentaquark via $\gamma p$ and ${\pi }^{-}p$ scatterings
• Photoproduction of pentaquarks states at the LHC
• Photo- and electro-production of narrow exotic states: from light quarks to charm and up to bottom
• Holographic charm and bottom pentaquarks II: Open and hidden decay widths
• Identify the hidden charm pentaquark signal from non-resonant background in electron-proton scattering
• Semi-inclusive lepto-production of hidden-charm exotic hadrons
• Production of hidden-charm and hidden-bottom pentaquark states in electron-proton collisions
• Pomeron, nucleon-resonance, and $(0^{+},0^{-},1^{+})$-meson contributions in $\varphi$-meson photoproduction
• Semi-inclusive electroproduction of hidden-charm and double-charm hadronic molecules
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$
• Holographic charm and bottom pentaquarks III: Excitations through photo-production of heavy mesons
• Hidden-charm Pentaquark Production at $e^{+}{e}^{-}$ Colliders
• Photoproduction of $a_2(1320)$ in a Regge model
• The possibility to study in-medium modification of $J/\psi$ mesons from their photoproduction on nuclei near threshold in the case of presence of the LHCb pentaquark states $P_c^{+}$ in this photoproduction
• Production of pentaquarks in $pA$-collisions
• 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
• Studying the Pc(4450) resonance in J/psi photoproduction off protons
• Hidden-charm pentaquark formation in antiproton - deuterium collisions
• Pentaquarks in semileptonic ${\Lambda }_b$ decays
• 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
• Searches for Exotic Hadrons at GlueX
• Pentaquark photoproduction
• Analysis of the hidden-charm pentaquark candidates in the $J/\psi p$ mass spectrum with QCD sum rules
• Summary and Outlook: 2015 Lepton-Photon Symposium
• Pentaquark states with hidden charm
• The Joint Physics Analysis Center: Recent results
• Quantum Numbers of the Pentaquark States $P_c^{+}$ via Symmetry Analysis
• Electromagnetic couplings of pentaquarks
• $P_c(4312{)}^{+}$ and $P_c(4337{)}^{+}$ as interfering ${\Sigma }_c\bar{D}$ and ${\Lambda }_c{\bar{D}}^{\ast }$ threshold cusps