Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions

Details Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions Core-Corona Separation in Ultra-Relativistic Heavy Ion Collisions

2007-04-10

arxiv.org/abs/0704.1270v1

Phys.Rev.Lett.98:152301,2007

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevLett.98.152301

Simple geometrical considerations show that the collision zone in high energy nuclear collisions may be divided into a central part (``core''), with high energy densities, and a peripheral part (``corona''), with smaller energy densities, more like in pp or pA collisions. We present calculations which allow to separate these two contributions, and which show that the corona contribution is quite small (but not negligible) for central collisions, but gets increasingly important with decreasing centrality. We will discuss consequences concerning results obtained in heavy ion collisions at the Relativistic Heavy Ion Collider (RHIC) and the Super Proton Synchrotron (SPS).

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