Mean-field potential effects on particle and antiparticle elliptic flows in the beam-energy scan program at RHIC
Abstract
The elliptic flow splitting between particles and their antiparticles has recently been observed by the STAR Collaboration in the beam-energy scan program at the Relativistic Heavy Ion Collider. In studies based on transport models, we have found that this splitting can be explained by the different mean-field potentials acting on particles and their antiparticles in the produced baryon-rich matter. In particular, we have shown that the experimentally measured relative elliptic flow difference can help constrain the vector coupling constant in the Nambu-Jona-Lasinio model used in describing the partonic stage of heavy-ion collisions. This information is useful for locating the critical point in the QCD phase diagram and thus understanding the phase structure of QCD.
Keywords
Cite
@article{arxiv.1407.3882,
title = {Mean-field potential effects on particle and antiparticle elliptic flows in the beam-energy scan program at RHIC},
author = {Jun Xu and Che Ming Ko and Feng Li and Taesoo Song and He Liu},
journal= {arXiv preprint arXiv:1407.3882},
year = {2016}
}
Comments
7 pages, 6 figures, results and corresponding discussions on phase diagram added, Contribution to The International Workshop on Nuclear Dynamics in Heavy-Ion Reactions and the Symmetry Energy (IWND2014), Lanzhou, China, 15-19 August, 2014