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 …

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 Born cross sections of the process e+ e-→ D* 0 D*-π+ at center-of-mass energies from
4.189 to 4.951 GeV are measured for the first time. The data samples used correspond to an …

For many decades after the invention of the quark model in 1964 there was no evidence that
hadrons are formed from anything other than the simplest pairings of quarks and antiquarks …

The cross sections of e+ e-→ π+ π-hc at center-of-mass energies from 3.896 to 4.600 GeV
are measured using data samples collected with the BESIII detector operating at the Beijing …

This document presents the initial scientific case for upgrading the Continuous Electron
Beam Accelerator Facility (CEBAF) at Jefferson Lab (JLab) to 22 GeV. It is the result of a …

The physics of exotic hadrons is revisited and reviewed, with emphasis on flavour
configurations which have not yet been investigated. The constituent quark model of …

In the past decade, due to the experimental observation of many charmonium-like states,
there has been a revival of hadron spectroscopy. In particular, the experimental observation …

Exploring the nature of exotic multiquark candidates such as the X (3872) plays a pivotal
role in understanding quantum chromodynamics (QCD). Despite significant efforts …