Speaker
Description
Standard hadrons are composed of either a quark-antiquark pair or three quarks, with their properties accurately described by the quark model. However, ”exotic” hadrons, containing more than three quarks or including gluons, are also theorized. The 2003 discovery of the X(3873) by the Belle collaboration, a four-quark state with unexpected properties, sparked intense interest in these exotic mesons. Subsequent observations of tetraquarks (by LHCb and BESIII) and pentaquarks (by LHCb) have further fueled this research, leading to investigations of even more complex structures, such as six-quark states. Despite this early prediction, no experimental evidence for the H-Dibaryon has been found. Nevertheless, ongoing theoretical research has maintained strong interest in its existence. The search for six-quark states is important not only for understanding hadron structure, but also because their discovery would have implications for astrophysics (neutron stars and neutron-rich matter) and nuclear physics (double hypernuclei). Further experimental searches are needed to explore the possibilities and establish tighter constraints on the existence of these exotic states.
