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Hadron Spectroscopy (theory): Diquarks, Tetraquarks, Pentaquarks and no quarks

F. E. Close
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Abstract

States beyond those expected in the simple constituent quark model are now emerging. I focus on the scalar glueball and its mixing with states in the $q\bar{q}$ nonet, and also on correlations in Strong QCD that may form diquarks and seed $qq\bar{q}\bar{q}$ states. Some models of the pentaquark candidate $Θ(1540)$ are critically discussed.

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F. E. Close. 2004-11-30. Hadron Spectroscopy (theory): Diquarks, Tetraquarks, Pentaquarks and no quarks. https://doi.org/10.1142/s0217751x05028661

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