Study of Lambda polarization in relativistic nuclear collisions at sqrt{s}_NN = 7.7-200 GeV
Nuclear Theory
2017-04-07 v3 High Energy Physics - Phenomenology
Abstract
We present a calculation of the global polarization of Lambda hyperons in relativistic Au-Au collisions at RHIC Beam Energy Scan range sqrt{s}_NN = 7.7 - 200 GeV with a 3+1 dimensional cascade + viscous hydro + cascade model, UrQMD+vHLLE. Within this model, the mean polarization of Lambda in the out-of-plane direction is predicted to decrease rapidly with collision energy from a top value of about 2% at the lowest energy examined. We explore the connection between the polarization signal and thermal vorticity and estimate the feed-down contribution to Lambda polarization due to the decay of higher mass hyperons.
Keywords
Cite
@article{arxiv.1610.04717,
title = {Study of Lambda polarization in relativistic nuclear collisions at sqrt{s}_NN = 7.7-200 GeV},
author = {Iu. Karpenko and F. Becattini},
journal= {arXiv preprint arXiv:1610.04717},
year = {2017}
}
Comments
10 pages, 9 figures. Final version published in EPJC