2011/04/17 by K. Werner, Iu. Karpenko, Werner, K. +5
Physics and Astronomy · Mathematics · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Stochastic processes and statistical mechanics
paper · pdf · doi:10.48550/arxiv.1104.3269
We study untriggered di-hadron correlations in Pb+Pb at 2.76 TeV, based on an event-by-event simulation of a hydrodynamic expansion starting from flux tube initial conditions. The correlation function shows interesting structures as a function of the pseudorapidity difference Δη and the azimuthal angle difference Δϕ, in particular comparing different centralities. We can clearly identify a peak-like nearside structure associated with very low momentum components of jets for peripheral collisions, which disappears towards central collisions. On the other hand, a very broad ridge structure from asymmetric flow seen at central collisions, gets smaller and finally disappears towards peripheral collisions.