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

Abstract

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.

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

References in corpus (16)

• Glauber Modeling in High Energy Nuclear Collisions
• Dihadron azimuthal correlations in Au+Au collisions at sqrt(s_NN)=200 GeV
• Effects of fluctuations on the initial eccentricity from the Color Glass Condensate in heavy ion collisions
• Long Range Correlations and the Soft Ridge in Relativistic Nuclear Collisions
• Intra-jet correlations of high-$p_t$ hadrons from STAR
• On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions
• Universality of the saturation scale and the initial eccentricity in heavy ion collisions
• Super-horizon fluctuations and acoustic oscillations in relativistic heavy-ion collisions
• Longitudinal Broadening of Quenched Jets in Turbulent Color Fields
• Delta- phi Delta- eta Correlations in Central Au+Au Collisions at sqrt{s_{NN}} = 200 Gev
• Elliptic flow fluctuations in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV
• Mach Cones in Quark Gluon Plasma
• Non-flow correlations and elliptic flow fluctuations in Au+Au collisions at sqrt(s_NN)=200GeV
• Forward-Backward Multiplicity Correlations in Au+Au Collisions at $\sqrt{s_{NN}}$ = 200 Gev
• The RHIC azimuth quadrupole: "perfect liquid" or gluonic radiation?
• Viscosity and the Soft Ridge at RHIC

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