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

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 two decades, a plethora of hadronic states beyond the conventional quark model
of qq ̄ mesons and qqq baryons have been observed experimentally, which motivated …

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 …

We predict several new exotic doubly heavy hadronic resonances, inferring from the
observed exotic bottomoniumlike and charmoniumlike narrow states X (3872), Z b (10610) …

A systematic study of possible deuteronlike twomeson bound states, deusons, is presented.
Previous arguments that many such bound states may exist are elaborated with detailed …

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

The narrow charmonium state near 3872 MeV reported by the Belle Collaboration and
confirmed by CDF lies almost exactly at the D 0D ̄∗ 0 threshold. As was predicted many …

A survey of the experimental, phenomenological, and theoretical status of the new heavy
mesons is presented. States discussed are the Bc, hc, ηc′, Ds (2317), Ds (2460), X (3872) …