The past decades witnessed the golden era of hadron physics. Many excited open heavy
flavor mesons and baryons have been observed since 2017. We shall provide an updated …

The quark model was formulated in 1964 to classify mesons as bound states made of a
quark–antiquark pair, and baryons as bound states made of three quarks. For a long time all …

The spectrum of hadronic molecules composed of heavy–antiheavy charmed hadrons has
been obtained in our previous work. The potentials are constants at the leading order, which …

The past seventeen years have witnessed tremendous progress on the experimental and
theoretical explorations of the multiquark states. The hidden-charm and hidden-bottom …

A coupled-channel approach is applied to the charged tetraquark state T cc+ recently
discovered by the LHCb Collaboration. The parameters of the interaction are fixed by a fit to …

The last decade has seen a marked shift in how the internal structure of hadrons is
understood. Modern experimental facilities, new theoretical techniques for the continuum …

We present the results of a lattice calculation of tetraquark states with quark contents q 1 q 2
Q¯ Q¯, q 1, q 2⊂ u, d, s, c and Q≡ b, c in both spin-0 (J= 0) and spin-1 (J= 1) sectors. This …

Structure in the di-J/ψ mass spectrum observed by the LHCb experiment around 6.9 and 7.2
GeV is interpreted in terms of JPC= 0++ and 2++ resonances between acc diquark and ac¯ …

Inspired by recent measurement of possible fully charmed tetraquarks in LHCb
Collaboration, we investigate the mass spectra of fully heavy tetraquarks QQ ̄ Q ̄ Q QQQ¯ …

Inspired by the observation of the doubly charmed state T cc and following theoretical
studies on its spectroscopic parameters, we investigate its magnetic dipole moment …