A large number of experimental discoveries especially in the heavy quarkonium sector that
did not meet the expectations of the until then very successful quark model led to a …

Multiquark resonances are undoubtedly experimentally observed. The number of states and
the amount of details on their properties have been growing over the years. It is very recent …

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 …

The past decade witnessed a remarkable proliferation of exotic charmonium-like
resonances discovered at accelerators. In particular, the recently observed charged states …

In the past years there has been a revival of hadron spectroscopy. Many interesting new
hadron states were discovered experimentally, some of which do not fit easily into the quark …

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 …

After constructing all the tetraquark interpolating currents with J PC= 1-+, 1--, 1++ and 1+-in
a systematic way, we investigate the two-point correlation functions to extract the masses of …

Inspired by the discovery of two pentaquarks P_ c (4380) P c (4380) and P_ c (4450) P c
(4450) at the LHCb detector, we study possible hidden-charm molecular pentaquarks in the …

We study here the interaction of DD¯* in the isospin I= 1 channel in light of recent theoretical
advances that allow us to combine elements of the local hidden gauge approach with heavy …

After constructing the possible JP= 0-, 0+, 1-, and 1+ QQ q¯ q¯ tetraquark interpolating
currents in a systematic way, we investigate the two-point correlation functions and extract …