Masses of light tetraquarks and scalar mesons in the relativistic quark model

Abstract

Masses of the ground state light tetraquarks are dynamically calculated in the framework of the relativistic diquark-antidiquark picture. The internal structure of the diquark is taken into account by calculating the form factor of the diquark-gluon interaction in terms of the overlap integral of the diquark wave functions. It is found that scalar mesons with masses below 1 GeV: f_0(600) (σ), K^*_0(800) (κ), f_0(980) and a_0(980) agree well with the light tetraquark interpretation.

9 pages, Report-no added

References in corpus (11)

• Big Bang Nucleosynthesis (in "The Review of Particle Properties" 2004)
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Exotica
• A new look at scalar mesons
• Four Sorts of Mesons
• Masses of excited heavy baryons in the relativistic quark-diquark picture
• Masses of heavy tetraquarks in the relativistic quark model
• Masses of tetraquarks with two heavy quarks in the relativistic quark model
• Masses of heavy baryons in the relativistic quark model
• Excited heavy tetraquarks with hidden charm
• Masses and electroweak properties of light mesons in the relativistic quark model

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• Lattice study of light scalar tetraquarks with I=0,2,1/2,3/2: are sigma and kappa tetraquarks?
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• Strange baryon spectroscopy in the relativistic quark model
• The light scalar mesons as tetraquarks
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• Masses of tetraquarks with open charm and bottom
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• Masses of open charm and bottom tetraquark states in a relativized quark model
• The $\sigma$-meson: four-quark vs. two-quark components and decay width in a Bethe-Salpeter approach
• The $ss\bar{s}\bar{s}$ tetraquark states and the newly observed structure $X(2239)$ by BESIII Collaboration
• Rare ${\Lambda }_b\to \Lambda l^{+}{l}^{-}$ and ${\Lambda }_b\to \Lambda \gamma$ decays in the relativistic quark model
• Nature of the sigma meson as revealed by its softening process
• Applications of Two-Body Dirac Equations to the Meson Spectrum with Three versus Two Covariant Interactions, SU(3) Mixing, and Comparison to a Quasipotential Approach
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• Further signatures to support the tetraquark mixing framework for the two light-meson nonets
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• Four-quark structure of the excited states of heavy mesons
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• Testing the tetraquark mixing framework from QCD sum rules for $a_0(980)$
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• The strong decays of the light scalar mesons $f_0(500)$ and $f_0(980)$
• Exclusive semileptonic and nonleptonic decays of B mesons to orbitally excited light mesons
• Scalar mesons in the chiral theory with quark degrees of freedom
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• Baryon Spectrum Analysis using Dirac's Covariant Constraint Dynamics
• The Relativistic Cornell-type Mechanism of Exotic Scalar Resonances
• Exclusive semileptonic decays of $D$ and $D_s$ mesons into orbitally and radially excited states of strange and light mesons
• Isospin breaking from diquark clustering
• Exclusive semileptonic $B$ decays to the ground and excited states of light mesons
• Spectroscopy of the tetraquark $c\bar{c}$-$c\bar{c}$ in a non-relativistic approach using a phenomenological QCD model