https://doi.org/10.1051/epjconf/202429605011
Constraints on initial baryon stopping and equation of state from directed flow
1 Department of Physics, McGill University, Montreal, Quebec H3A 2T8, Canada
2 Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, USA
3 RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973, USA
* e-mail: lipei.du@mail.mcgill.ca
** e-mail: chunshen@wayne.edu
*** e-mail: sangyong.jeon@mcgill.ca
**** e-mail: charles.gale@mcgill.ca
Published online: 26 June 2024
Our investigation focuses on the rapidity-dependent directed flow, v1(y), of identified hadrons in Au+Au collisions across a broad range of √SNN from 7.7 to 200 GeV. Employing a (3+1)-dimensional hybrid framework, our study successfully reproduces the characteristic features of the measured v1(y) for both mesons and baryons across the considered beam energies. Notably, our analysis reveals the constraining power of baryonic v1(y) on the initial baryon stopping mechanism. Together with mesonic v1(y), the directed flow serves as a crucial tool for probing the equation of state governing dense nuclear matter at finite chemical potentials.
© The Authors, published by EDP Sciences, 2024
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
