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  • Letter
  • Open Access

Doubly heavy tetraquark multiplets as heavy antiquark-diquark symmetry partners of heavy baryons

Tian-Wei Wu1,2,* and Yong-Liang Ma1,†

  • 1School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, Hangzhou, 310024, China
  • 2University of Chinese Academy of Sciences, Beijing, 100049, China

  • *wutianwei@ucas.ac.cn
  • †ylma@ucas.ac.cn
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Phys. Rev. D 107, L071501 – Published 11 April, 2023

DOI: https://doi.org/10.1103/PhysRevD.107.L071501

Abstract

Symmetries play important roles in the understanding of hadron structures and spectroscopy. Motivated by the discovery of the doubly charmed tetraquark Tcc+(3875), we study the ground states of the doubly heavy tetraquarks with the QCD inspired heavy antiquark-diquark symmetry in the constituent quark model. Six ground states of TQQ(Q=c,b) are predicted and the lightest Tcc state has a mass of 3875.8±7.6  MeV and spin-parity 1+, which are consistent with those of the observed Tcc+(3875). In addition, the magnetic moments of the predicted tetraquarks Tcc+(3876) and Tbb−(10396) are also estimated in the same model, which provide further information to distinguish the structures of the TQQ states.

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Phys. Rev. D 107, L071501– Published 11 April, 2023
  • Received 5 December 2022
  • Accepted 26 March 2023
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