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Exploring the spectroscopic features of double-strangeness tetraquark states

Xuejie Liu1,*, Haoming Zheng1,†, Dianyong Chen2,4,‡, Hongxia Huang3,§, and Jialun Ping3,∥

  • *Contact author: 1830592517@qq.com
  • †Contact author: 2402183023@stu.htu.edu.cn
  • ‡Contact author: chendy@seu.edu.cn
  • §Contact author: hxhuang@njnu.edu.cn
  • ∥Contact author: jlping@njnu.edu.cn
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Phys. Rev. D 113, 114008 – Published 5 June, 2026

DOI: https://doi.org/10.1103/l1n1-vvq1

Abstract

Since the discovery of the Tcc double-charm tetraquark by LHCb collaboration, the field of theoretical research on heavy quarks has advanced rapidly, with increasing interest in exploring the light quark sector. In this work, the quark delocalization color screening model, together with the resonating group method, is employed to systematically investigate the double-strangeness tetraquark system. Both meson-meson and diquark-antidiquark configurations are considered. The interactions between hadron pairs with different quantum numbers are studied, and possible bound-state and resonancelike solutions are examined. In the single-channel estimations, two weakly bound solutions, K¯*K¯ and K¯*K¯*, are obtained in the I(JP)=0(1+) sector. After channel coupling between the two configurations is included, a deeply bound coupled-channel solution with the same quantum numbers and a mass of approximately 1310 MeV is found. In addition, the real-scaling stabilization analysis indicates a resonancelike structure in the I(JP)=0(1+) ssn¯n¯ system, with an estimated mass of around 1783 MeV and a width of approximately 5.6 MeV.

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Phys. Rev. D 113, 114008– Published 5 June, 2026
  • Received 6 January 2026
  • Accepted 12 May 2026
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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