Heavy tetraquarks in the relativistic quark model

Abstract

We give a review of the calculations of the masses of tetraquarks with two and four heavy quarks in the framework of the relativistic quark model based on the quasipotential approach and QCD. The diquark-antidiquark picture of heavy tetraquarks is used. The quasipotentials of the quark-quark and diquark-antidiquark interactions are constructed similarly to the previous consideration of mesons and baryons. Diquarks are considered in the colour triplet state. It is assumed that the diquark and antidiquark interact in the tetraquark as a whole and the internal structure of the diquarks is taken into account by the calculated form factor of the diquark-gluon interaction. All parameters of the model are kept fixed from our previous calculations of meson and baryon properties. A detailed comparison of the obtained predictions for heavy tetraquark masses with available experimental data is given. Many candidates for tetraquarks are found. It is argued that the structures in the di-$J/\psi$ mass spectrum observed recently by the LHCb Collaboration can be interpreted as $cc\bar{c}\bar{c}$ tetraquarks.

25 pages, 1 figure, talk at the XXXII International Workshop on High Energy Physics "Hot problems of Strong Interactions" November 9-13, 2020, based on arXiv:0706.3853, arXiv:0808.3912, arXiv:0812.3477, arXiv:2009.13237; v2: published version, references added, note on new LHCb data (arXiv:2103.01803) added

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Cited by in corpus (64)

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• Hidden-charm tetraquarks with strangeness in the chiral quark model
• The lineshape of the compact fully heavy tetraquark
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• Going in quest of potential tetraquark interpretations for the newly observed $T_{\psi \psi }$ states in light of the diquark-antidiquark scenarios
• The quasi-fission phenomeonon of double charm $T_{cc}^{+}$ induced by nucleon
• NLO results with operator mixing for fully heavy tetraquarks in QCD sum rules
• A new group of doubly charmed molecule with $T$-doublet charmed meson pair
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• Fully charmed P-wave tetraquark resonant states in the quark model
• Triply Heavy $\Omega$ Baryons with JETHAD: A High-Energy Viewpoint
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• Two-photon decay of fully-charmed tetraquarks from light-by-light scattering at the LHC
• Prediction of charmed-bottom pentaquarks in quark model
• $\lambda$ and $\rho$ Regge trajectories for hidden bottom and charm tetraquarks $(Qq)(\bar{Q}{\bar{q}}^{\prime })$
• Spectroscopic study of $ss\bar{b}\bar{b}$ and $bb\bar{b}\bar{b}$ Tetraquarks using Regge phenomenology
• Investigation of Mass and Decay Characteristics of the Light-Strange Tetraquark
• The doubly-charmed pentaquark in a quark model with a complete set of harmonic oscillator bases
• Spectroscopy of heavy-heavy flavour mesons and annihilation widths of quarkonia
• Opportunities for studying $C$-even resonances at 3-12 GeV photon collider
• Unified tetraquark equations
• Discovering an Unquenched Dynamics Mechanism for Charmonium Scattering
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• Fully heavy tetraquark states with a diquark-antidiquark configuration
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• Binding energy of the $T_{bb}$ tetraquark from lattice QCD with relativistic and nonrelativistic heavy-quark actions