Constraints on rapidity-dependent initial conditions from charged particle pseudorapidity densities and two-particle correlations
Abstract
We study the initial three-dimensional spatial configuration of the quark-gluon plasma produced in relativistic heavy-ion collisions using centrality and rapidity-dependent measurements of charged particle pseudorapidity densities and two-particle correlations. A cumulant-generating function is used to parametrize the rapidity dependence of local entropy deposition and extend arbitrary boost-invariant initial conditions to nonzero beam rapidities. The model is compared to p+Pb and Pb+Pb single-particle distributions and systematically optimized using Bayesian parameter estimation to extract high-probability initial condition parameters. The optimized initial conditions are then compared to a number of experimental observables including two-particle rapidity correlations, the rapidity dependence of anisotropic flow, and event-plane decorrelations.
Keywords
Cite
@article{arxiv.1610.08490,
title = {Constraints on rapidity-dependent initial conditions from charged particle pseudorapidity densities and two-particle correlations},
author = {Weiyao Ke and J. Scott Moreland and Jonah E. Bernhard and Steffen A. Bass},
journal= {arXiv preprint arXiv:1610.08490},
year = {2017}
}
Comments
This version contains major updates including improved Bayesian calibration and results discussion compared to the previous version