Analysis of the scalar and axial-vector heavy diquark states with QCD sum rules

Abstract

In this article, we study the mass spectrum of the scalar and axial-vector heavy diquark states with the QCD sum rules in a systematic way. Once the reasonable values are obtained, we can take them as basic parameters and study the new charmonium-like states as the tetraquark states.

arXiv comment16 pages, 24 figures, slight revision

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• Nonrelativistic model of tetraquarks and predictions for their masses from fits to charmed and bottom meson data
• Analysis of the ${\frac{3}{2}}^{\pm }$ pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
• Analysis of the $X(5568)$ as scalar tetraquark state in the diquark-antidiquark model with QCD sum rules
• Analysis of the light-flavor scalar and axial-vector diquark states with QCD sum rules
• Analysis of the strong decay $X(5568)\to B_s^0{\pi }^{+}$ with QCD sum rules
• Vector hidden-bottom tetraquark candidate: $Y(10750)$
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• Vector tetraquark state candidates: $Y(4260/4220)$, $Y(4360/4320)$, $Y(4390)$ and $Y(4660/4630)$
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• Analysis of the ${\Sigma }_Q$ baryons in the nuclear matter with the QCD sum rules
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• Reanalysis of the $X(3915)$, $X(4500)$ and $X(4700)$ with QCD sum rules
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• Regge trajectories for the heavy-light diquarks
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• Analysis of the triply-charmed pentaquark states with QCD sum rules
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• Discussions on Stability of Diquarks
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• Analysis of the hidden-charm pentaquark candidates in the $J/\psi \Xi$ mass spectrum via the QCD sum rules
• Analysis of the tensor-tensor type scalar tetraquark states with QCD sum rules
• Charting doubly strange hidden-charm pentaquarks: An electromagnetic mapping of spin-$\frac{1}{2}$ and $\frac{3}{2}$ states
• Mass-Spectroscopy of [$bb][\bar{b}\bar{b}$] and [$bq][\bar{b}\bar{q}$] tetraquark states in a diquark-antidiquark formalism
• Analytic electromagnetic signatures of compact pentaquark structure: A multi-current QCD light-cone sum rules analysis of the $P_{\psi s}^{\Lambda }$ states