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Coalescence production of sexaquark with three diquarks in high-energy nuclear collisions

Zhi-Lei She1, An-Ke Lei2,3, Dai-Mei Zhou2,*, Larissa V. Bravina3,†, Evgeny E. Zabrodin3,4, Sonia Kabana5,‡, and Vipul Bairathi5

  • 1School of Mathematical and Physical Sciences, Wuhan Textile University, Wuhan 430200, China
  • 2Key Laboratory of Quark and Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
  • 3University of Oslo, POB 1048 Blindern, N-0316 Oslo, Norway
  • 4Skobeltsyn Institute of Nuclear Physics, Moscow State University, Vorob’evy Gory, Moscow RU-119991, Russia
  • 5Instituto de Alta Investigación, Universidad de Tarapacá, Arica 1000000, Chile

  • *Contact author: zhoudm@mail.ccnu.edu.cn
  • †Contact author: larissa.bravina@fys.uio.no
  • ‡Contact author: Sonja.Kabana@cern.ch
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Phys. Rev. D 112, 034002 – Published 4 August, 2025

DOI: https://doi.org/10.1103/zk16-vpgn

Abstract

The coalescence production of the sexaquark, a hypothetical stable state with quark content (uuddss), is investigated using the parton and hadron cascade model PACIAE in pp collisions at s=7  TeV. In this work, the compact sexaquark bound state of three diquarks is formed in the final partonic state by a two-step approach, which involves “diquark” formation via partonic coalescence and sexaquark construction with the dynamically constrained phase-space coalescence model successively. The yields, yield ratios, and dependences of the spatial parameters (the size of the diquark D0 and the radius of the sexaquark R0) of a (anti)sexaquark are predicted. The yields of the hadronic H-dibaryon molecule H(ΛΛ) generated in the final hadronic state are also compared. These estimates provide references for future sexaquark searches and other exotic state studies, such as dibaryons.

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Physics Subject Headings (PhySH)

Corrections

23 June, 2026

Correction: The omission of a support statement in the Acknowledgments has been fixed.

Article Text

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Phys. Rev. D 112, 034002– Published 4 August, 2025
  • Received 25 February 2025
  • Accepted 26 June 2025
  • Corrected 23 June 2026
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