Collective flow and multiparticle azimuthal correlations - INSPIRE

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Collective flow and multiparticle azimuthal correlations

Oct, 2000

6 pages

Part of From $e^+ e^-$ to Heavy Ion Collisions: Proceedings of the 30th International Symposium on Multiparticle Dynamics (ISMD 2000), Tihany, Hungary, October 9-15, 2000, 529-534

Contribution to:

- ISMD 2000
, 529-534

e-Print:

nucl-th/0011013 [nucl-th]

Report number:

ULB-TH-00-023,
SACLAY-SPH-T-00-154

View in:

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Abstract:

The measurement of azimuthal distributions in nucleus-nucleus collisions relies upon the assumption that azimuthal correlations between particles result solely from their correlation with the reaction plane (i.e. flow). We show that at SPS energies, the ansatz is no longer valid, and two-particle correlations due to momentum conservation, final state interactions or resonance decays become of the same order as those arising from flow. This leads us to introduce new methods to analyse collective flow, based on a cumulant expansion, which enable to extract smaller values than those accessible to the standard analysis.

talk: Tihany 2000/10/09
nucleus nucleus: nuclear reaction
multiple production
angular correlation
nuclear physics: collective phenomena
particle flow
cumulant expansion
interpretation of experiments: CERN SPS

References(11)

Figures(0)

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NA49

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