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  • Letter
  • Open Access

Tribaryons with lattice QCD and one-boson exchange potentials

Tian-Wei Wu1,2, Si-Qiang Luo3,4, Ming-Zhu Liu5,6, Li-Sheng Geng6,7,8,4,9,*, and Xiang Liu3,10,4,11,†

  • 1School of Science, Shenzhen Campus of Sun Yat-sen University, Shenzhen 518107, China
  • 2School of Fundamental Physics and Mathematical Sciences, Hangzhou Institute for Advanced Study, UCAS, Hangzhou, 310024, China
  • 3School of Physical Science and Technology, Lanzhou University, Lanzhou 730000, China
  • 4Lanzhou Center for Theoretical Physics, Lanzhou University, Lanzhou, Gansu 730000, China
  • 5School of Space and Environment, Beihang University, Beijing 102206, China
  • 6School of Physics, Beihang University, Beijing 102206, China
  • 7Peng Huanwu Collaborative Center for Research and Education, Beihang University, Beijing 100191, China
  • 8Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University, Beijing, 102206, China
  • 9Southern Center for Nuclear-Science Theory (SCNT), Institute of Modern Physics, Chinese Academy of Sciences, Huizhou 516000, Guangdong Province, China
  • 10Research Center for Hadron and CSR Physics, Lanzhou University and Institute of Modern Physics of CAS, Lanzhou 730000, China
  • 11MoE Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, China

  • *lisheng.geng@buaa.edu.cn
  • †xiangliu@lzu.edu.cn
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Phys. Rev. D 108, L091506 – Published 29 November, 2023

DOI: https://doi.org/10.1103/PhysRevD.108.L091506

Abstract

Motivated by the existence of two-body hadronic molecules composed of ΩΩ, ΩcccΩccc, and ΩbbbΩbbb predicted by lattice QCD simulations, we use the Gaussian expansion method to investigate whether three-body systems composed of ΩΩΩ, ΩcccΩcccΩccc, and ΩbbbΩbbbΩbbb can bind with the two-body S01 interactions provided by lattice QCD. Our results show that none of the three-body systems bind. On the other hand, we find that with the one-boson exchange potentials the ΩΩΩ system develops a bound state, for which the S25 interaction plays an important role. Our studies support the existence of the 32+ ΩΩΩ bound state and the nonexistence of the 32+ ΩcccΩcccΩccc and ΩbbbΩbbbΩbbb bound states, due to the suppressed S25 interactions in heavier systems.

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Phys. Rev. D 108, L091506– Published 29 November, 2023
  • Received 8 January 2023
  • Revised 2 October 2023
  • Accepted 7 November 2023
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