Quark spin correlation inside hyperons

TL;DR

This paper investigates quark spin correlations inside hyperons by analyzing hyperon spin polarization data from heavy-ion collisions, proposing constraints and inequalities that suggest the presence of such correlations at lower energies.

Contribution

It introduces a method to constrain quark spin correlations inside hyperons using experimental polarization data, offering new insights into hyperon spin structure.

Findings

Constraints on phase space functions of spin polarization

Possible inequalities indicating quark spin correlations

Clues for hyperon spin structure at lower energies

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.