2021/04/30 by Pengcheng Li, Yongjia Wang, Jan Steinheimer +2
Physics and Astronomy · #Coalescence (physics) #Hadron #High-Energy Particle Collisions Research #Intermittency #Large Hadron Collider #Multiplicity (mathematics) #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Proton #Quantum Chromodynamics and Particle Interactions #Thermodynamics #nucl-th
paper · pdf · doi:10.1016/j.physletb.2021.136393
published as Physics Letters B 818, 136393 (2021) · 6 pages, 6 figures
openalex created_date 2021/04/26 · arxiv created 2021/05/06 · openalex publication_date 2021/05/25 · arxiv updated 2022/03/24 · openalex updated_date 2026/08/05
It is shown that the inclusion of hadronic interactions, and in particular nuclear potentials, in simulations of heavy ion collisions at the SPS energy range can lead to obvious correlations of protons. These correlations contribute significantly to an intermittency analysis as performed at the NA61 experiment. The beam energy and system size dependence is studied by comparing the resulting intermittency index for heavy ion collisions of different nuclei at beam energies of 40A, 80A and 150A GeV. The resulting intermittency index from our simulations is similar to the reported values of the NA61 collaboration, if nuclear interactions are included. The observed apparent intermittency signal is the result of the correlated proton pairs with small relative transverse momentum Δpt, which would be enhanced by hadronic potentials, and this correlation between the protons is slightly influenced by the coalescence parameters and the relative invariant four-momentum qinv cut.