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Large observed v 2 as a signature for deconfinement

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Acta Physica Hungarica Series A, Heavy Ion Physics

Abstract

We present a new plot for representing R AA(ø) data that emphasizes the strong correlation between high-p η suppression and its elliptic anisotropy. We demonstrate that existing models cannot reproduce the centrality dependence of this correlation. Modification of a geometric energy loss model to include thermal absorption and stimulated emission can match the trend of the data, but requires dN g/dy values inconsistent with the observed multiplicity. By including a small, outward-normal directed surface impulse opposing energy loss, \(\Delta p_ \bot \hat n\), one can account for the centrality dependence of the observed Au+Au elliptic quench pattern. We also present predictions for Cu+Cu reactions.

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Authors and Affiliations

  1. Columbia University, 538 West 120th Street, New York, NY, USA

    W. A. Horowitz

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  1. W. A. Horowitz
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Horowitz, W.A. Large observed v 2 as a signature for deconfinement. Acta Phys. Hung. A 27, 221–225 (2006). https://doi.org/10.1556/APH.27.2006.2-3.10

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  • DOI: https://doi.org/10.1556/APH.27.2006.2-3.10

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