Tetra- and penta-quark structures in the constituent quark model

Abstract

With the development of high energy physics experiments, a large amount of exotic states in the hadronic sector have been observed. In order to shed some insights on the nature of the tetraquark and pentaquark candidates, a constituent quark model, along with the gaussian expansion method, has been employed systematically in the real- and complex-range investigations. We review herein the double- and full-heavy tetraquarks, but also the hidden-charm, -bottom and doubly charmed pentaquarks. Several experimentally observed exotic hadrons are well reproduced within our approach; moreover, their possible compositeness are suggested and other properties analyzed accordingly such as their decay widths and general patterns in the spectrum. Besides, we report also some predictions not yet seen by experiment within the studied tetraquark and pentaquark sectors.

arXiv commentInvited review paper to be submitted to Symmetry Journal, special issue "Advances in Chiral Quark Models". 92 pages, 30 figures, 66 tables

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Cited by in corpus (65)

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• Spectrum of the molecular pentaquarks
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• Exotic Heavy Hadrons
• Rotation and vibration in tetraquarks
• Hadronic molecules and multiquark states
• Investigating the two-pion exchange of the double charm $D{D}^{\ast }$ chiral interactions and $T_{cc}$
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• Charting doubly strange hidden-charm pentaquarks: An electromagnetic mapping of spin-$\frac{1}{2}$ and $\frac{3}{2}$ states
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