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System Size, Energy, Pseudorapidity, and Centrality Dependence of Elliptic Flow

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arxiv nucl-ex/0610037 v1 pith:CE2JWP7J submitted 2006-10-24 nucl-ex

System Size, Energy, Pseudorapidity, and Centrality Dependence of Elliptic Flow

classification nucl-ex
keywords ellipticflowcu-cueccentricitysystemau-aucentralitycollisions
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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This paper presents measurements of the elliptic flow of charged particles as a function of pseudorapidity and centrality from Cu-Cu collisions at 62.4 and 200 GeV using the PHOBOS detector at the Relativistic Heavy Ion Collider (RHIC). The elliptic flow in Cu-Cu collisions is found to be significant even for the most central events. For comparison with the Au-Au results, it is found that the detailed way in which the collision geometry (eccentricity) is estimated is of critical importance when scaling out system-size effects. A new form of eccentricity, called the participant eccentricity, is introduced which yields a scaled elliptic flow in the Cu-Cu system that has the same relative magnitude and qualitative features as that in the Au-Au system.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Nonlinear response of flow harmonics in Gubser flow with participant-reaction planes mismatch

    nucl-th 2026-04 unverdicted novelty 7.0

    Analytic nonlinear response coefficients for v2 and v4 in Gubser flow are derived, including a participant-plane angle factor that modifies strength and sign of the response.

  2. Explaining higher-order correlations between elliptic and triangular flow

    nucl-th 2025-11 unverdicted novelty 6.0

    Higher-order v2-v3 cumulants reduce to expressions fixed by the mean elliptic flow from nuclear overlap geometry.

  3. Explaining higher-order correlations between elliptic and triangular flow

    nucl-th 2025-11 conditional novelty 6.0

    Mixed harmonic cumulants of elliptic and triangular flow obey simple ratios set by reaction-plane elliptic flow, yielding new predictions for 10-particle cumulants.

  4. The size of the quark-gluon plasma in ultracentral collisions: impact of initial density fluctuations on the average transverse momentum

    nucl-th 2025-11 unverdicted novelty 5.0

    Volume variation with multiplicity in ultracentral collisions is small when total entropy scales with nuclear mass number, as shown by relating it to initial density fluctuation profiles.