On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions

Details On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions On the Origin of the "Ridge" phenomenon induced by Jets in Heavy Ion Collisions

2007-06-25

arxiv.org/abs/0706.3531v1

Phys.Rev.C76:047901,2007

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1103/PhysRevC.76.047901

We argue that "ridge" in 2-particle correlation function associated with hard trigger at RHIC heavy ion collisions is naturally explained by an interrelation of jet quenching and hydrodynamical transverse flow. The excess particles forming the ridge are produced by QCD bremsstrahlung along the beam (and thus have wide rapidity distribution) and then boosted by transverse flow. Nontrivial correlation between directions of the jet and the radial flow is provided by jet quenching: our straightforward and basically parameter-independent calculation reproduces the angular shape, width and other properties of the "ridge".

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