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In particle physics, a diquark, or diquark correlation/clustering, is a hypothetical state of two quarks grouped inside a baryon (that consists of three quarks).[1] Corresponding models of baryons are referred to as quark–diquark models. The diquark is often treated as a single subatomic particle with which the third quark interacts via the strong interaction. The existence of diquarks inside the nucleons is a disputed issue, but it helps to explain some nucleon properties and to reproduce experimental data sensitive to the nucleon structure. Diquark–antidiquark pairs have also been advanced for anomalous particles such as the X(3872).[2][3]
- ^ Lichtenberg, D. B.; Namgung, W.; Predazzi, E.; Wills, J. G. (1982-06-14). "Baryon Masses in a Relativistic Quark-Diquark Model". Physical Review Letters. 48 (24): 1653–1656. doi:10.1103/PhysRevLett.48.1653. ISSN 0031-9007.
- ^ Ali, Ahmed; Maiani, Luciano; Polosa, Antonio D. (2019). Multiquark Hadrons. Cambridge University Press. p. 152. ISBN 978-1-107-17158-9. Retrieved 23 June 2020.
- ^ Peloso, Marco (2008). Continuous Advances In Qcd 2008 - Proceedings Of The Conference. World Scientific. p. 63. ISBN 978-981-4468-76-3. Retrieved 23 June 2020.