Implications of space-momentum correlations and geometric fluctuations in heavy-ion collisions

Details Implications of space-momentum correlations and geometric fluctuations in heavy-ion collisions Implications of space-momentum correlations and geometric fluctuations in heavy-ion collisions

2010-02-25

arxiv.org/abs/1002.4878v2

Physics

Nuclear Physics

Nuclear Experiment

8 pages, 4 figures, invited talk at SQM2009 in Buzios: updated for minor referee comments and corrections to dN/dphi distribut

Scientific paper

The standard picture of heavy-ion collisions includes a collective expansion. If the initial energy density in the collisions is lumpy, then a collective expansion can convert that spatial lumpiness into correlations between final-state particles. Correlations measurements in heavy-ion collisions show several prominent features not present in proton-proton collisions. I argue that many features of these correlations are related to the transference of over-densities from the initial overlap region into momentum-space during the quark gluon plasma phase of the expansion. I show results from a toy Monte-Carlo to illustrate the consequences of lumpy initial conditions and a collective expansion.

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