L. V. Bravina, E. E. Zabrodin, Amand Faessler, C. Fuchs
Published 1999-11-03Version 1
The directed flow of protons is studied in the quark-gluon string model as a function of the impact parameter for S+S and Pb+Pb reactions at 160 AGeV/c. A significant reduction of the directed flow in midrapidity range, which can lead to the development of the antiflow, is found due to the absorption of early emitted particles by massive spectators (shadowing effect). This effect can mimic the formation of the quark-gluon plasma (QGP). However, in the absorption scenario the antiflow is stronger for the system of light colliding nuclei than for the heavy ones, while in the case of the plasma creation the effect should be opposite.
Comments: REVTEX, 11 pages, 5 figures embedded, accepted for publication in Physics Letters B
Journal: Phys.Lett. B470 (1999) 27-32
Directed flow, a signal for the phase transition in Relativistic Nuclear Collisions?
Energy densities and equilibration in heavy ion collisions at sqrt(s) = 200 GeV with the quark-gluon string model
Angular Dependence of Jet Quenching Indicates Its Strong Enhancement Near the QCD Phase Transition
