Nonrelativistic model of tetraquarks and predictions for their masses from fits to charmed and bottom meson data

Abstract

We investigate a nonrelativistic model of tetraquarks, which are assumed to be compact and to consist of diquark-antidiquark pairs. We fit, for the first time, basically all currently known values for the measured masses of 45 mesons, including both charmed and bottom mesons, to the model and predict masses of tetraquarks as well as diquarks. In particular, we find masses of four axial-vector diquarks, i.e., $qc$, $cc$, $qb$, and $bb$, where $q=u,d$, and 24 ground-state tetraquarks, including both heavy-light tetraquarks ($qc\overline{qc}$ and $qb\overline{qb}$) and heavy tetraquarks ($cc\overline{cc}$ and $bb\overline{bb}$). In general, our results for the masses of $qb\overline{qb}$, $cc\overline{cc}$, and $bb\overline{bb}$ are largely comparable with other reported results, whereas our results for the masses of $qc\overline{qc}$ are slightly larger than what has been found earlier. Finally, we identify some of the obtained predictions for masses of tetraquarks with masses of experimental tetraquark candidates, and especially, we find that $\psi (4660)$, $Z_b(10610)$, and $Z_b(10650)$ could be described by the model.

12 pages, 1 figure. Final version published in Phys. Rev. D

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Cited by in corpus (34)

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• Nonrelativistic Treatment of Fully-Heavy Tetraquarks as Diquark-Antidiquark States
• Fully-heavy tetraquark spectroscopy in the relativistic quark model
• Exotic resonances of fully-heavy tetraquarks in a lattice-QCD insipired quark model
• Higher mass spectra of the fully-charmed and fully-bottom tetraquarks
• Mass spectra and wave functions of $T_{QQ\bar{Q}\bar{Q}}$ tetraquarks
• All-charm tetraquark in front form dynamics
• Spectroscopy of all charm tetraquark states
• Going in quest of potential tetraquark interpretations for the newly observed $T_{\psi \psi }$ states in light of the diquark-antidiquark scenarios
• Fully heavy pentaquarks in quark models
• NLO results with operator mixing for fully heavy tetraquarks in QCD sum rules
• The two-photon decay of X(6900) from light-by-light scattering at the LHC
• The bosonic algebraic approach applied to the $[QQ][\bar{Q}\bar{Q}]$ tetraquarks
• Flavor Exotic Triply-Heavy Tetraquark States in AdS/QCD Potential
• Pseudoscalar charmonium pair interactions via the Pomeron exchange mechanism
• Mass-Spectroscopy of hidden charm and hidden strange tetraquarks in diquark-antidiquark approach
• Investigation of Mass and Decay Characteristics of the All-light Tetraquark
• Regge trajectories for the triply heavy bottom-charm baryons in the diquark picture
• Regge trajectories for the light diquarks
• Spectroscopy of $cc\bar{c}\bar{c}$ and $ss\bar{c}\bar{c}$ Tetraquarks within the Framework of Regge Phenomenology
• $\lambda$ and $\rho$ Regge trajectories for hidden bottom and charm tetraquarks $(Qq)(\bar{Q}{\bar{q}}^{\prime })$
• Prediction of charmed-bottom pentaquarks in quark model
• Tetraquark mass relations in quark and diquark models
• Heavy Hexaquarks in the Flux Tube Model
• Fully-heavy tetraquarks in the vacuum and in a hot environment
• Investigation of Mass and Decay Characteristics of the Light-Strange Tetraquark
• Regge Trajectories of Tetraquarks and Pentaquarks with Massive Quarks in the Flux Tube Model
• Magnetic moments of spin--1/2 triply-heavy baryons: A study of Light-cone QCD and Quark-diquark model
• $\lambda$ and $\rho$ Regge trajectories for bottom-charm tetraquarks $(bq)(\bar{c}{\bar{q}}^{\prime })$ and $(cq)(\bar{b}{\bar{q}}^{\prime })$
• $\lambda$ and $\rho$ Regge trajectories for the pentaquark $P_{cc\bar{c}bb}$ in the diquark-triquark picture
• Rotation and vibration in tetraquarks
• The heavy tetra-quark states after the discovery of tetra-charm states
• Mass-Spectroscopy of [$bb][\bar{b}\bar{b}$] and [$bq][\bar{b}\bar{q}$] tetraquark states in a diquark-antidiquark formalism