Masses of heavy tetraquarks in the relativistic quark model

By D. Ebert, R. Faustov, V. Galkin. 2005

182 citations recorded by the source corpus.

The masses of heavy tetraquarks with hidden charm and bottom are calculated in the framework of the relativistic quark model. The tetraquark is considered as the bound state of a heavy-light diquark and antidiquark. The light quark in a heavy-light diquark is treated completely relativistically. The internal structure of the diquark is taken into account by calculating the diquark-gluon form factor in terms of the diquark wave functions. New experimental data on charmonium-like states above open charm threshold are discussed. The obtained results indicate that the X(3872) can be the tetraquark state with hidden charm. The masses of ground state tetraquarks with hidden bottom are found to be below the open bottom threshold.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/aa69a29fade0e150f171725747cfd6f17e1ce0c3

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In Nuclear and High Energy Physics

1. S. Godfrey
2. Xiang Liu
3. S. Olsen
4. Hua-Xing Chen
5. Wei Chen
6. Shi-Lin Zhu
7. S. Stone
8. A. Ali

Citations in the corpus

• Quarkonia and their transitions (2007, background): “This favors the conclusion that the X(3872) may be a D0D̄0∗ molecule or “tetraquark” (Ebert et al., 2006; Maiani et al., 2005a) state.”
• The Exotic XYZ Charmonium-Like Mesons (2008, background): “Maiani et al advocate a tetraquark explanation for the X(3872) (40, 74).”
• Exotics: Heavy pentaquarks and tetraquarks (2017, methodology): “Alternative calculations of the tetraquark spectrum based on diquark-antidiquark model have been carried out in other phenomenological schemes [352], and in the QCD sum rule framework [58,353].”
• The hidden-charm pentaquark and tetraquark states (2016, methodology): “[572, 512] by Ebert, Faustov, and Galkin in the framework of the relativistic quark model.”
• The XYZ states: Experimental and theoretical status and perspectives (2019, background): “It is also natural to search for a similar state with JPC = 1 (called Xb hereafter) in the bottomonium system [107, 108].”