TY  - JOUR
A1  - Li, Pengcheng
A1  - Wang, Yongjia
A1  - Steinheimer, Jan
A1  - Li, Qingfeng
A1  - Zhang, Hongfei
T1  - Proton correlations and apparent intermittency in the UrQMD model with hadronic potentials
T2  - Physics letters B
N2  - 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.
KW  - Heavy-ion collisions
KW  - Hadronic potential
KW  - Intermittency
KW  - Transport model
Y1  - 2021
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/69889
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-698894
SN  - 1873-2445
SN  - 0370-2693
VL  - 818
IS  - 136393
PB  - Elsevier
CY  - Amsterdam
ER  -