The low-lying hidden- and double-charm tetraquark states in a constituent quark model with instanton-induced interaction
Jinbao Wang, Gang Li, Chun-Sheng An, Cheng-Rong Deng, Ju-Jun Xie
Abstract
Abstract Spectrum of the low-lying hidden- and double-charm tetraquark states are investigated in a nonrelativistic quark potential model, where the instanton-induced interaction is taken as the residual spin-dependent hyperfine interaction between quarks. The model parameters are fixed by fitting the spectrum of the ground hadron states. Our numerical results show that masses of several presently studied tetraquark states are close to those of the experimentally observed candidates of exotic meson, which indicates that the corresponding compact tetraquark components may take considerable probabilities in those observed exotic states.
Topics & Concepts
TetraquarkPhysicsInstantonParticle physicsQuarkExotic hadronCharm quarkCharm (quantum number)Spectrum (functional analysis)MesonPentaquarkHadronSpin (aerodynamics)Quark modelQuantum mechanicsQuarkoniumThermodynamicsQuantum Chromodynamics and Particle InteractionsParticle physics theoretical and experimental studiesHigh-Energy Particle Collisions Research