Rapidity Correlation Structures from Causal Hydrodynamics

Abstract

Viscous diffusion can broaden the rapidity dependence of two-particle transverse momentum fluctuations. Surprisingly, measurements at RHIC by the STAR collaboration demonstrate that this broadening is accompanied by the appearance of unanticipated structure in the rapidity distribution of these fluctuations in the most central collisions. Although a first order classical Navier-Stokes theory can roughly explain the rapidity broadening, it cannot explain the additional structure. We propose that the rapidity structure can be explained using the second order causal Israel-Stewart hydrodynamics with stochastic noise.

8 pages, 5 figures, Proceedings of the 32nd Winter Workshop on Nuclear Dynamics, Guadeloupe, 28 February to 5 March 2016

References in corpus (3)

• New Developments in Relativistic Viscous Hydrodynamics
• Measuring Shear Viscosity Using Transverse Momentum Correlations in Relativistic Nuclear Collisions
• Evolution of the differential transverse momentum correlation function with centrality in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV

Cited by in corpus (5)

• Two particle differential transverse momentum and number density correlations in p-Pb and Pb-Pb at the LHC
• Extraction of the specific shear viscosity of quark-gluon plasma from two-particle transverse momentum correlations
• Relating Measurable Correlations in Heavy Ion Collisions to Bulk Properties of Equilibrated QCD Matter
• Consistent Implementation of Finite-Range Terms into Hydrodynamics
• Effect of centrality bin width corrections on two-particle number and transverse momentum differential correlation functions