EPJ Web Conf.
Volume 259, 2022The 19th International Conference of Strangeness in Quark Matter (SQM 2021)
|Number of page(s)||4|
|Section||Bulk Properties (Parallel)|
|Published online||01 February 2022|
Net-particle number fluctuations in a hydrodynamic description of heavy-ion collisions
1 Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
2 Department of Physics and Astronomy, Wayne State University, Detroit, Michigan 48201, USA
3 RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, NY 11973, USA
* e-mail: firstname.lastname@example.org
Published online: 1 February 2022
Utilizing viscous hydrodynamic simulations of heavy-ion collisions, we study the behavior of cumulants of (net-)(anti)proton number distributions at RHIC beam energy scan energies, incorporating non-critical contributions like baryon conservation and excluded volume. The experimental data on net-proton cumulants at √SNN > 20 GeV are consistent with simultaneous effects of global baryon conservation and repulsive interactions in baryon sector, whereas the data at lower collision energies show possible indications for sizable attractive interactions among baryons. We discuss the behavior of factorial cumulants in addition to the ordinary cumulants, and also address the quantitative difference between proton and baryon number cumulants.
© The Authors, published by EDP Sciences, 2022
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