In the past decade many charmonium-like states were observed experimentally. Especially
those charged charmonium-like Z c states and bottomonium-like Z b states cannot be …

Abstract The S-wave DD⁎ scattering in the isospin I= 0, 1 channels is studied in N f= 2 lattice
QCD at m π≈ 350 MeV. It is observed that the DD⁎ interaction is repulsive in the I= 1 …

The P_c(4380)^+ and P_c(4450)^+ states recently discovered at LHCb have masses close
to several relevant thresholds, which suggests they can be described in terms of meson …

Multiquark states have been advocated to explain recent experimental data in the heavy-
light sector, and there are already speculations about multiquarks containing only heavy …

We present recent results of hadron spectroscopy and hadron–hadron interaction from the
perspective of constituent quark models. We pay special attention to the role played by …

Investigation of the tetraquark states in the improved chromomagnetic interaction model -
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Inspired by the newly observed T cc+ state, we systematically investigate the S-wave triple-
charm molecular states composed of D* D* D and D* D* D*. We employ the one-boson …

The mass-spectra of all-charm tetraquark states [cc][c¯ c¯] with the diquark-antidiquark
configuration are investigated in this study. To determine the fitting parameters for the …

The discovery of numerous new charmonium-like structures since 2003 have revitalized
interest in exotic meson spectroscopy. These structures do not fit easily into the conventional …

We analyze the expectation value of the Polyakov loop in the fundamental and higher
representations in the confined phase of QCD. We discuss a hadroniclike representation …