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Quark spin correlation inside hyperons

Lucia Oliva1,2,*, Qun Wang3,4,†, and Xin-Nian Wang5,6,‡

  • *Contact author: lucia.oliva@ct.infn.it
  • †Contact author: qunwang@ustc.edu.cn
  • ‡Contact author: xnwang@ccnu.edu.cn
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Phys. Rev. C 114, 014914 – Published 27 July, 2026

DOI: https://doi.org/10.1103/h88t-phwj

Abstract

The global spin polarization of hyperons in heavy-ion collisions have been investigated by including spin-correlation effects among their constituent quarks. The available data on global spin polarizations of hyperons and spin alignments of vector mesons provide constraints on phase-space functions of the spin polarization and correlation. These constraints can lead to inequalities under some approximations, which might provide possible clues for the presence of quark spin correlation inside hyperons at lower collision energies.

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Phys. Rev. C 114, 014914– Published 27 July, 2026
  • Received 15 March 2026
  • Accepted 30 June 2026
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