Speaker
Description
We employ a (3+1)-dimensional hydrodynamic framework to investigate the polarization of Λ hyperons in heavy-ion collisions at √sₙₙ = 200 GeV. Our findings reveal a pronounced sensitivity to the choice of initial-state modeling and the viscous properties of the quark–gluon plasma. The model successfully reproduces key hadronic flow measurements and forecasts non-trivial azimuthal modulation patterns in the longitudinal polarization. We introduce novel relations linking polarization observables with anisotropic flow coefficients, which open up promising avenues for future experimental validation. Additionally, a comparative study across different collision system sizes demonstrates behavior consistent with a vorticity-driven polarization mechanism, offering stringent constraints on the interplay between QGP hydrodynamics and spin-polarization effects.
