When the quark model was formulated in the 1960s by Murray Gell-Mann and George Zweig, they predicted that mesons (two-quark hadrons) and baryons (three-quark hadrons) would not be the only hadrons in ...

The strong interaction is one of the fundamental forces of nature, which binds quarks into hadrons such as the proton and the neutron, the building blocks of atoms. According to the quark model, ...

Hadrons count among their number the familiar protons and neutrons that make up our atoms, but they are much more than that. In the early 1900s, physicists were trying to find the source of a ...

Researchers from the Institute of Modern Physics (IMP) of the Chinese Academy of Sciences (CAS), together with collaborators from the Instituto Tecnológico de Aeronáutica in Brazil and Iowa State ...

While decades of experimental study support QCD as the underlying theory of quark interactions, a detailed understanding of the way QCD generates protons, neutrons, and other strongly interacting ...

Measurements of the properties of exotic particles called all-charm tetraquarks, reported by the CMS Collaboration at the Large Hadron Collider (LHC), are published in Nature this week. The results ...

Pentaquarks do not fit into the traditional quark model of hadrons, but understanding these exotic new particles is offering fresh insights into the subtleties of the strong interaction Five quarks In ...

Light and heavy New calculations reveal quark distributions in flavour-asymmetric mesons. (Courtesy: iStock Traffic-Analyzer) The distribution of quarks inside flavour-asymmetric mesons has been ...