Multiquark Hadrons - A New Facet of QCD
High Energy Physics - Phenomenology
2016-05-23 v1 High Energy Physics - Experiment
High Energy Physics - Lattice
Abstract
I review some selected aspects of the phenomenology of multiquark states discovered in high energy experiments. They have four valence quarks (called tetraquarks) and two of them are found to have five valence quarks (called pentaquarks), extending the conventional hadron spectrum which consists of quark-antiquark mesons and baryons. Multiquark states represent a new facet of QCD and their dynamics is both challenging and currently poorly understood. I discuss various approaches put forward to accommodate them, with emphasis on the diquark model.
Cite
@article{arxiv.1605.05954,
title = {Multiquark Hadrons - A New Facet of QCD},
author = {Ahmed Ali},
journal= {arXiv preprint arXiv:1605.05954},
year = {2016}
}
Comments
27 pages, 8 figures, 6 tables, to be published in the proceedings of the 14th. Regional Conference on Mathematical Physics, Nov. 9-14, 2015, Quaid-i-Azam University, Islamabad, Pakistan