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 …

Using proton-proton collision data at centre-of-mass energies of s= 7, 8 and 13 TeV
recorded by the LHCb experiment at the Large Hadron Collider, corresponding to an …

Non-Abelian gauge theories underlie our understanding of fundamental forces in nature,
and developing tailored quantum hardware and algorithms to simulate them is an …

Quantum Chromodynamics, the theory of quarks and gluons, whose interactions can be
described by a local SU (3) gauge symmetry with charges called “color quantum numbers” …

The super τ-charm facility (STCF) is an electron–positron collider proposed by the Chinese
particle physics community. It is designed to operate in a center-of-mass energy range from …

The detection of gravitational waves originating from a neutron-star merger, GW170817, by
the LIGO and Virgo Collaborations has recently provided new stringent limits on the tidal …

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 …