Signals of the QCD Critical Point in Hydrodynamic Evolutions

Details Signals of the QCD Critical Point in Hydrodynamic Evolutions Signals of the QCD Critical Point in Hydrodynamic Evolutions

2009-07-25

arxiv.org/abs/0907.4435v2

Nucl.Phys.A830:291c-294c,2009

Physics

Nuclear Physics

Nuclear Theory

4 pages, 6 figures, 21st International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions (QM2009) 30 Mar - 4 Apr 200

Scientific paper

10.1016/j.nuclphysa.2009.10.025

The presence of a critical point in the QCD phase diagram can deform the trajectories describing the evolution of the expanding fireball in the QCD phase diagram. The deformation of the hydrodynamic trajectories will change the transverse velocity dependence of the proton-antiproton ratio when the fireball passes in the vicinity of the critical point. An unusual transverse velocity dependence of the anti-proton/proton ratio in a narrow beam energy window would thus signal the presence of the critical point.

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