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Phys. Rev. C 66, 021901 (2002) [5 pages]

Centrality and momentum-selected elliptic flow: Tighter constraints for the nuclear equation of state

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P. Chung et al. (E895 Collaboration)
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Rapid Communication Received 3 December 2001; published 20 August 2002

Proton elliptic flow is studied as a function of impact parameter b, for two transverse momentum cuts in 2–6 A GeV Au+Au collisions. The elliptic flow shows an essentially linear dependence on b (for 1.5<b<8 fm) with a negative slope at 2A GeV, a positive slope at 6A GeV, and near zero slope at 4A GeV. These selective flow measurements provide better understanding of the interplay of the different factors responsible for the generation of elliptic flow at AGS energies. In addition, extensive comparisons of the measured and calculated flow values indicate that such measurements offer much more stringent constraints for discriminating between various equations of state.


©2002 The American Physical Society

URL: http://link.aps.org/doi/10.1103/PhysRevC.66.021901
DOI: 10.1103/PhysRevC.66.021901
PACS: 25.75.Ld

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