TY  - JOUR
A1  - Nara, Yasushi
A1  - Niemi, Harri
A1  - Steinheimer-Froschauer, Jan
A1  - Stöcker, Horst
T1  - Equation of state dependence of directed flow in a microscopic transport model
T2  - Physics Letters B
N2  - We study the sensitivities of the directed flow in Au+Au collisions on the equation of state (EoS), employing the transport theoretical model JAM. The EoS is modified by introducing a new collision term in order to control the pressure of a system by appropriately selecting an azimuthal angle in two-body collisions according to a given EoS. It is shown that this approach is an efficient method to modify the EoS in a transport model. The beam energy dependence of the directed flow of protons is examined with two different EoS, a first-order phase transition and crossover. It is found that our approach yields quite similar results as hydrodynamical predictions on the beam energy dependence of the directed flow; Transport theory predicts a minimum in the excitation function of the slope of proton directed flow and does indeed yield negative directed flow, if the EoS with a first-order phase transition is employed. Our result strongly suggests that the highest sensitivity for the critical point can be seen in the beam energy range of 4.7 ≤√sNN≤11.5GeV.
Y1  - 2017
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/43674
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-436749
SN  - 0370-2693
N1  - ©2017 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
VL  - 769
SP  - 543
EP  - 548
ER  -