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arXiv · 1210.1965

Longitudinal fluctuations of the fireball density in heavy-ion collisions

Adam Bzdak·Derek Teaney
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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, y_{1} - y_{2}, but also on the rapidity sum, y_{1} + y_{2}. 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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Adam Bzdak, Derek Teaney. 2012-10-06. Longitudinal fluctuations of the fireball density in heavy-ion collisions. https://doi.org/10.1103/physrevc.87.024906

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