Production of pentaquarks in $pA$-collisions

Abstract

We argue that a hidden-charm pentaquark recently observed in weak decays of ${\Lambda }_b$ can be produced in proton-nucleus collisions without electroweak intermediaries. We analyze the production cross-section for several scenarios of internal structure and find that a cross-section is sizable. This process can be studied both in collider as well as in fixed-target experiments. In the former case, the pentaquarks are produced at very forward rapidities, whereas in the latter case, pentaquarks are produced with relatively small rapidities and can be easily detected via invariant mass distribution of a forward $J/\psi$ and a comoving proton. Additionally, the suggested process allows to check the existence of a neutral pentaquark $P_c^0$ (an isospin partner of $P_c^{+}$) predicted in several models. The rapidity and transverse momentum distributions of pentaquarks could provide comprehensive information about the $\bar{c}c$ component of this exotic baryon.

15 pages, 8 Figures

References in corpus (50)

• An accurate nucleon-nucleon potential with charge-independence breaking
• Heavy quarkonium: progress, puzzles, and opportunities
• Observation of $J/\psi p$ resonances consistent with pentaquark states in ${\Lambda }_b^0\to J/\psi K^{-}p$ decays
• Exotic Anti-Decuplet of Baryons: Prediction from Chiral Solitons
• New Exotic Meson and Baryon Resonances from Doubly-Heavy Hadronic Molecules
• Momentum sharing in imbalanced Fermi systems
• Identifying exotic hidden-charm pentaquarks
• How to reveal the exotic nature of the P_c(4450)
• Measurement of 2- and 3-Nucleon Short Range Correlation Probabilities in Nuclei
• Evidence for the Strong Dominance of Proton-Neutron Correlations in Nuclei
• Towards exotic hidden-charm pentaquarks in QCD
• Analysis of combined HERA data in the Impact-Parameter dependent Saturation model
• $\bar{D}{\Sigma }_c^{\ast }$ and ${\bar{D}}^{\ast }{\Sigma }_c$ interactions and the LHCb hidden-charmed pentaquarks
• Rapidity and transverse momentum dependence of inclusive J/$\psi$ production in pp collisions at $\sqrt{s}=7$ TeV
• Formation of hidden-charm pentaquarks in photon-nucleon collisions
• Physics Opportunities of a Fixed-Target Experiment using the LHC Beams
• Photoproduction of hidden charm pentaquark states $P_c^{+}(4380)$ and $P_c^{+}(4450)$
• Diffractive Heavy Quarkonium Photo- and Electroproduction in QCD
• J/psi and psi(2S) production in pp collisions at sqrt(s) = 7 TeV
• Coherence Phenomena in Charmonium Production off Nuclei at the Energies of RHIC and LHC
• Some Predictions of Diquark Model for Hidden Charm Pentaquark Discovered at the LHCb
• Photoproduction of Exotic Baryon Resonances
• New limits on intrinsic charm in the nucleon from global analysis of parton distributions
• Is pentaquark doublet a hadronic molecule?
• Experimental Search for Pentaquarks
• Heavy-Quarkonium Production in High Energy Proton-Proton Collisions at RHIC
• Gluon Shadowing and Heavy Flavor Production off Nuclei
• Narrow Nucleon-$\psi (2S)$ Bound State and LHCb Pentaquarks
• Issues and Opportunities in Exotic Hadrons
• A Monte Carlo generator of nucleon configurations in complex nuclei including Nucleon-Nucleon correlations
• Measurement of the ratio of prompt ${\chi }_c$ to $J/\psi$ production in $pp$ collisions at $\sqrt{s}=7$ TeV
• On the pentaquark candidates $P_c^{+}(4380)$ and $P_c^{+}(4450)$ within the soliton picture of baryons
• $J/\psi ({\eta }_c)N$ and ${\rm Y}({\eta }_b)N$ cross sections
• Quarkonium Physics at a Fixed-Target Experiment using the LHC Beams
• Extracting the Mass Dependence and Quantum Numbers of Short-Range Correlated Pairs from A(e,e'p) and A(e,e'pp) Scattering
• Short-range correlations in nuclei with similarity renormalization group transformations
• Prompt charmonia production and polarization at LHC in the NRQCD with kt-factorization. Part I: psi(2S) meson
• Large Rapidity Gap Processes in Proton-Nucleus Collisions
• Neutral hidden charm pentaquark states $P_c^0(4380)$ and $P_c^0(4450)$ in ${\pi }^{-}p\to J/\psi n$ reaction
• Looking for Exotic Multiquark States in Nonleptonic B Decays
• Inclusive production of $J/\psi$ meson in proton-proton collisions at BNL RHIC
• Factorization of exclusive electroinduced two-nucleon knockout
• Improvement of the Theta+ width estimation method on the Light Cone
• Nucleon-nucleon momentum correlation function as a probe of the density distribution of valence neutron in neutron-rich nucleus
• Strong decay patterns of the hidden-charm pentaquark states $P_c(4380)$ and $P_c(4450)$
• Diagonal input for the evolution of off-diagonal partons
• Psi' to J/Psi Ratio in Diffractive Photoproduction
• Effects of Ground-State Correlations on High Energy Scattering off Nuclei: the Case of the Total Neutron-Nucleus Cross Section
• On relation between rest frame and light-front descriptions of quarkonium
• Pentaquarks and strange tetraquark mesons

Cited by in corpus (6)

• Pentaquark and Tetraquark states
• Remarks on the $P_c$ structures and triangle singularities
• Coupled channel analysis of molecule picture of $P_c(4380)$
• Hidden-charm pentaquarks and their hidden-bottom and $B_c$-like partner states
• A Fixed-Target Programme at the LHC: Physics Case and Projected Performances for Heavy-Ion, Hadron, Spin and Astroparticle Studies
• Hidden-charm Pentaquark Production at $e^{+}{e}^{-}$ Colliders