Is soft physics entropy driven?

Abstract

The soft physics, pT < 2 GeV/c, observables at both RHIC and the SPS have now been mapped out in quite specific detail. From these results there is mounting evidence that this regime is primarily driven by the multiplicity per unit rapidity, dNch/deta. This suggests that the entropy of the system alone is the underlying driving force for many of the global observables measured in heavy-ion collisions. That this is the case and there is an apparent independence on collision energy is surprising. I present the evidence for this multiplicity scaling and use it to make some extremely naive predictions for the soft sector results at the LHC.

Proceedings of Hot Quarks 2006. 8 figures, 6 pages

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• Azimuthal anisotropies for Au+Au collisions in the parton-hadron transient energy range
• Pion femtoscopy in p+p collisions at sqrt(s)=200 GeV
• The first moment of azimuthal anisotropy in nuclear collisions from AGS to LHC energies
• Scaling of $v_2$ in heavy ion collisions
• Collective Dynamics at RHIC
• Status of Strangeness-Flavor Signature of QGP