Why do we see certain types of strongly interacting elementary particles and not others?
This question was posed more than 50 years ago in the context of the quark model. M. Gell …

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 inspiration for this book came from François le Diberder. During his term as
spokesperson for B 八 B 八 R he laid down a vision for the two B Factory detector …

About 120 baryons and baryon resonances are known, from the abundant nucleon with u
and d light-quark constituents up to the Ξ b−=(bsd), which contains one quark of each …

According to the classification of the quark model, the hadrons going beyond three-quark
baryon and quark-antiquark meson pictures are called exotic hadrons. Many new hadrons …

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 …

Identifying a zero-range exchange of vector mesons as the driving force for the s-wave
scattering of pseudo-scalar mesons off the baryon ground states, a rich spectrum of …

The strange quark plays a unique role in QCD, reflecting its intermediate mass between the
light and heavy quarks. In recent years, remarkable progress has been made in the …

We investigate the possibilities of using measurements in present and future experiments on
heavy ion collisions to answer some longstanding problems in hadronic physics, namely …

To better understand the nature and internal structure of the exotic states discovered by
many collaborations, more information on their electromagnetic properties and their strong …