Analyzing the Power Spectrum of the Little Bangs

Details Analyzing the Power Spectrum of the Little Bangs Analyzing the Power Spectrum of the Little Bangs

2011-01-10

arxiv.org/abs/1101.1926v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, talk given at Hard Probes 2010, Eilat, Israel

Scientific paper

In this talk we discuss the analogy between data from heavy-ion collisions and the Cosmic Microwave Background. We identify p_T correlations data as the heavy-ion analogy to the CMB and extract a power-spectrum from the heavy-ion data. We define the ratio of the final state power-spectrum to the initial coordinate-space eccentricity as the transfer-function. From the transfer-function we find that higher $n$ terms are suppressed and we argue that the suppression provides information on length scales like the mean-free-path. We make a rough estimate of the mean-free-path and find that it is larger than estimates based on the centrality dependence of v_2.

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