Vorticity and $\Lambda$ polarization in the microscopic transport model PACIAE
Nuclear Theory
2021-11-17 v1 High Energy Physics - Phenomenology
Abstract
We study the behavior of four types of vorticities in non-central Au+Au collisions at energies = 5--200 GeV using a microscopic transport model PACIAE. The results show that the vorticities decay faster at lower energy and smaller impact parameter. The non-monotonic dependence of the initial vorticities on the collision energies is reconfirmed and the turning point is 10-15 GeV for different vorticities. The global polarization at energies = 7.7--200 GeV is reproduced by introducing an energy density freeze-out criterion.
Keywords
Cite
@article{arxiv.2110.13485,
title = {Vorticity and $\Lambda$ polarization in the microscopic transport model PACIAE},
author = {Anke Lei and Dujuan Wang and Dai-Mei zhou and Ben-Hao Sa and Laszlo Pal Csernai},
journal= {arXiv preprint arXiv:2110.13485},
year = {2021}
}
Comments
7 pages, 7 figures, to be published in Pyhysical Review C