Longitudinal fluctuations of the fireball density in heavy-ion collisions

2012/10/06 by Adam Bzdak, Derek Teaney · 1 citation
Physics and Astronomy · #nucl-th #hep-ph #nucl-ex

paper · pdf · doi:10.1103/physrevc.87.024906

9 pages, 2 figures

arxiv created 2012/10/06 · arxiv updated 2013/03/13

Abstract

We show that fluctuations of the fireball shape in the longitudinal direction generate nontrivial rapidity correlations that depend not only on the rapidity difference, y₁ - y₂, but also on the rapidity sum, y₁ + y₂. This is explicitly demonstrated in a simple wounded nucleon model, and the general case is also discussed. We show how to extract different components of the fluctuating fireball shape from the measured two-particle rapidity correlation function. The experimental possibility of studying the longitudinal initial conditions in heavy-ion and proton-proton collisions is emphasized.

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