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arxiv: nucl-th/0607009 · v2 · submitted 2006-07-07 · ⚛️ nucl-th

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Eccentricity fluctuations and elliptic flow at RHIC

Rajeev S. Bhalerao , Jean-Yves Ollitrault
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classification ⚛️ nucl-th
keywords floweccentricityfluctuationseccentricitiesellipticaffectanalysisanalyzed
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Fluctuations in nucleon positions can affect the spatial eccentricity of the overlap zone in nucleus-nucleus collisions. We show that elliptic flow should be scaled by different eccentricities depending on which method is used for the flow analysis. These eccentricities are estimated semi-analytically. When $v_2$ is analyzed from 4-particle cumulants, or using the event plane from directed flow in a zero-degree calorimeter, the result is shown to be insensitive to eccentricity fluctuations.

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Cited by 1 Pith paper

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  1. Thermal and geometric normal modes of spectral fluctuations in heavy-ion collisions

    nucl-th 2026-04 unverdicted novelty 7.0

    Principal component analysis of spectral fluctuations in heavy-ion collisions yields thermal and geometric normal modes that explain 99.5% of variance and account for measured flow observables v0(pT) and v02(pT).