Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2010-12-27
Physics
Nuclear Physics
Nuclear Theory
Talk presented by MR at the VI Workshop on Particle Correlations and Femtoscopy, BITP, Kiev, 14-18 September 2010
Scientific paper
We investigate the role of the central two-body nucleon-nucleon correlations on typical quantities observed in relativistic heavy-ion collisions. Basic correlation measures, such as the fluctuations of the participant eccentricity, initial size fluctuations, or the fluctuations of the number of sources producing particles, are sensitive at the level 10-20% to the inclusion of the two-body correlations. However, the realistic correlation function gives virtually indistinguishable results from the {\em hard-core repulsion} with the expulsion distance set to $\sim 0.9$ fm. In the second part of the talk we compare the spherical and Gaussian wounding profiles and find that the latter, which is more realistic, leads to reduced eccentricity and fluctuations. This has significance for precision studies of the elliptic flow.
Broniowski Wojciech
Rybczynski Maciej
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