Speaker
Description
The polarization of the $\Lambda$ hyperon is a key observable in the study of the Quark-Gluon Plasma produced in heavy ion collisions. Recent studies have highlighted the importance of considering the thermal shear tensor, the symmetric derivative of the four-temperature vector, in the calculations of polarization as it can accommodate the discrepancy between theoretical predictions and experimental data. We review the derivation of the thermal shear tensor contribution to the $\Lambda$ polarization and perform numerical simulations of heavy-ion collisions at RHIC and LHC energies using the hybrid SMASH+vHLLE. Polarization is calculated in different freeze-out scenarios including the feed-down corrections. We discuss the dependence of the results on the initial conditions and collision energy and compare them with the available experimental data.
