Fully heavy pentaquarks

Abstract

Very recently, the LHCb Collaboration reported a fully charmed tetraquark state $X(6900)$ in the invariant mass spectrum of $J/\psi$ pairs. If one $J/\psi$ meson is replaced with a fully charmed baryon, we obtain a fully charmed pentaquark candidate. In this work, we perform a systematic study on the mass spectra of the S-wave fully heavy pentaquark $QQQQ\bar{Q}$ in the framework of the chromomagnetic interaction model. Based on our results in two different schemes, we further investigate the decay behaviors for them. We hope that our study will be helpful in searching for such types of exotic pentaquark states in experiments in the future.

13 pages, 7 tables and 1 figure

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• Higher fully-charmed tetraquarks: Radial excitations and P-wave states
• Heavy Flavour Physics and CP Violation at LHCb: a Ten-Year Review
• Fully heavy pentaquarks in quark models
• Fully-charm and -bottom pentaquarks in a Lattice-QCD inspired quark model
• Investigation of hidden-charm double strange pentaquark candidate $P_{css}$ via its mass and strong decays
• Analysis of the fully-heavy pentaquark states via the QCD sum rules
• Fully heavy pentaquark states in constituent quark model
• Heavy flavor pentaquarks with four heavy quarks
• Manifestly exotic pentaquarks with a single heavy quark
• Where are the hidden-charm hexaquarks?
• Masses and magnetic moments of exotic fully heavy pentaquarks
• Fully-heavy hexaquark states via the QCD sum rules
• Mass spectra of hidden heavy-flavor tetraquarks with two and four heavy quarks
• Mass spectra for the $cc\bar{b}\bar{b}$/$bb\bar{c}\bar{c}$ tetraquark states
• Investigation of a candidate spin-$\frac{1}{2}$ hidden-charm triple strange pentaquark state $P_{csss}$
• Discovery of $T_{c\bar{s}0}^a(2900{)}^{0,++}$ implies new charmed-strange pentaquark system
• Models and Potentials in Hadron Spectroscopy
• Doubly charmed dibaryon states
• Systematics of fully heavy dibaryons
• Fully heavy multiquarks
• $\lambda$ and $\rho$ Regge trajectories for the pentaquark $P_{cc\bar{c}bb}$ in the diquark-triquark picture
• Study of Fully heavy Pentaquarks using extended Gursey-Radicati formalism
• Properties of H particle-admixed compact star