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

Heavy flavour physics provides excellent opportunities to indirectly search for new physics at
very high energy scales and to study hadron properties for deep understanding of the strong …

We report on the measurement of the γ p→ J/ψ p cross section from E γ= 11.8 GeV down to
the threshold at 8.2 GeV using a tagged photon beam with the GlueX experiment. We find …

We investigate the observed pentaquark candidates P c (4312), P c (4440), and P c (4457)
from the latest LHCb measurement, as well as four possible spin partners in the D¯(*) Σ c …

A bstract In two recent papers, we used the hadro-quarkonium model to study the properties
of hidden-charm and bottom tetraquarks and pentaquarks. Here, we extend the previous …

The effects of the Σ c D¯*-Λ c (2595) D¯ coupled-channel dynamics and various one-boson-
exchange (OBE) forces for the LHCb pentaquark states, P c (4440) and P c (4457), are …

In a recent measurement LHCb reported pronounced structures in the J/ψ J/ψ spectrum.
One of the various possible explanations of those is that they emerge from non-perturbative …

The study of J/ψ photoproduction at low energies has consequences for the understanding
of multiple aspects of nonperturbative QCD, ranging from mechanical properties of the …

A molecular model of the P c (4457) and P c (4440) LHCb states is proposed. The model
relies on channels coupled by long-range pion-exchange dynamics with features that …

New LHCb Collaboration results on pentaquarks with hidden charm1 are discussed. These
results fit nicely in the hadrocharmonium pentaquark scenario. 2, 3, In the new data the old …