AdS-QCD quark-antiquark potential, meson spectrum and tetraquarks

Abstract

AdS/QCD correspondence predicts the structure of quark-antiquark potential in the static limit. We use this piece of information together with the Salpeter equation (Schrödinger equation with relativistic kinematics) and a short range hyperfine splitting potential to determine quark masses and the quark potential parameters from the meson spectrum. The agreement between theory and experimental data is satisfactory provided one considers only mesons comprising at least one heavy quark. We use the same potential (in the one-gluon-exchange approximation) and these data to estimate constituent diquark masses. Using these results as an input we compute tetraquark masses using a diquark-antidiquark model. The masses of the states X(3872) or Y(3940) are predicted rather accurately. We also compute tetraquark masses with open charm and strangeness. Our result is that tetraquark candidates such as D_s(2317), D_s(2457) or X(2632) can hardly be interpreted as diquark-antidiquark states within the present approach.

arXiv comment15 pages, 4 figures

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Cited by in corpus (29)

• The hidden-charm pentaquark and tetraquark states
• Heavy-light meson spectroscopy and Regge trajectories in the relativistic quark model
• Doubly heavy baryons in a Salpeter model with AdS/QCD inspired potential
• Open charm and bottom tetraquarks in an extended relativized quark model
• Heavy pentaquark spectroscopy in the diquark model
• Masses of tetraquarks with open charm and bottom
• Some Aspects of Three-Quark Potentials
• The $P$-wave $[cs][\bar{c}\bar{s}]$ tetraquark state: Y(4260) or Y(4660)?
• Masses of open charm and bottom tetraquark states in a relativized quark model
• Meson-Nucleon Coupling from AdS/QCD
• Model of the N-Quark Potential in SU(N) Gauge Theory using Gauge-String Duality
• Holography at work for nuclear and hadron physics
• Heavy Tetraquarks in the Diquark-Antidiquark Picture
• Remarks on Static Three-Quark Potentials, String Breaking and Gauge/String Duality
• Exotic Hybrid Quark Potentials
• String Breaking, Baryons, Medium, and Gauge/String Duality
• Baryon modes in string breaking from gauge/string duality
• Thermodynamic Properties of Holographic Multiquark and the Multiquark Star
• Flavor Exotic Triply-Heavy Tetraquark States in AdS/QCD Potential
• Generalized parton distributions in the soft-wall model of AdS/QCD
• Exotic Multi-quark States in the Deconfined Phase from Gravity Dual Models
• Towards a Stringy Description for the $Q\bar{Q}q\bar{q}$-Quark System
• Baryon spectrum in a finite-temperature AdS/QCD model
• Nonlocal and Mixed Condensates Tests of Gauge/String Duality
• Magnetic properties of holographic multiquarks in the quark-gluon plasma
• $D^{(\ast )}{\bar{B}}^{(\ast )}$ dynamics in chiral effective field theory
• Magnetic Phase Diagram of Dense Holographic Multiquarks in the Quark-gluon Plasma
• A quark core-gluon model for heavy hybrid baryons
• Diquark size effects in the quark-diquark approximation for baryons