Advances in Chiral Quark Models
A special issue of Symmetry (ISSN 2073-8994). This special issue belongs to the section "Physics".
Deadline for manuscript submissions: closed (28 February 2021) | Viewed by 18364
Special Issue Editor
Special Issue Information
Dear Colleagues,
A very successful classification scheme for hadrons in terms of their valence quarks and antiquarks was independently proposed by Murray Gell-Mann and George Zweig in 1964. This classification was called the quark model, and it basically separates hadrons in two big families: mesons and baryons. They are, respectively, quark–antiquark and three-quark bound-states located at the multiplets of flavor symmetry; all hadrons which belong to the same multiplet have roughly the same mass. The quark model received experimental verification beginning in the late 1960s and, despite extensive experimental searches, no unambiguous candidates for exotic quark–gluon configurations were identified until the last decade with the discovery in 2003 of an unexpected enhancement at 3872 MeV, the so-called X(3872) state. Today, the number of exotic candidates in both light- and heavy-quark sectors has increased dramatically, challenging the simple quark model picture and leading to an explosion of related theoretical and experimental activity. The ultimate goal of theory is to describe the properties of exotic states from QCD’s first principles. However, since this task is quite challenging, a more modest goal to start with is the development of QCD-motivated phenomenological models that specify the colored constituents, how they are clustered, and the forces between them. This Special Issue invites contributions reporting recent advances of phenomenological quark models in the study of hadron's spectrocopy, structure, and interactions, paying special attention to the exotic candidates but without losing sight of the conventional states.
Prof. Dr. Jorge Segovia
Guest Editor
Manuscript Submission Information
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Keywords
- Quantum chromodynamics
- Phenomenological quark model
- Hadron physics
- Exotics hadrons
- Multiquark systems
- Glueballs and hybrids.