Pseudorapidity correlations in heavy ion collisions from viscous fluid dynamics

Understand

We demonstrate by explicit calculations in 3+1 dimensional viscous relativistic fluid dynamics how two-particle pseudorapidity correlation functions in heavy ion collisions at the LHC and RHIC depend on the number of particle producing sources and the transport properties of the produced medium.

• In particular, we present results for the Legendre coefficients of the two-particle pseudorapidity correlation function in Pb+Pb collisions at 2760 GeV and Au+Au collisions at 200 GeV from viscous hydrodynamics with three dimensionally fluctuating initial conditions.
• Our results suggest that these coefficients provide important constraints on initial state fluctuations and the transport properties of the quark gluon plasma.