Can shadowing mimic the QCD phase transition?

Details Can shadowing mimic the QCD phase transition? Can shadowing mimic the QCD phase transition?

1999-11-03

arxiv.org/abs/nucl-th/9911012v1

Phys.Lett. B470 (1999) 27-32

Physics

Nuclear Physics

Nuclear Theory

REVTEX, 11 pages, 5 figures embedded, accepted for publication in Physics Letters B

Scientific paper

10.1016/S0370-2693(99)01295-2

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.

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