Di-jet shape modification in heavy ion collisions

Abstract

We present preliminary results from intermediate pT(1–5 GeV/c) di-hadron azimuthal correlations induced by hadronic di-jets produced in AuAu collisions at √sNN=200 GeV. The near-side (Δϕ∼0) has a typical singlepeaked structure which broadens with the centrality of the collision. A qualitatively new phenomenon shows up in the shape of the away-side (Δϕ∼π): it has a symmetric, double-peaked structure in central and mid-central collisions.