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Title: Anisotropy as a signature of transverse collective flow

Journal Article · · Physical Review, D (Particles Fields); (United States)
 [1]
  1. Service de Physique Theorique, Centre d'Etudes de Saclay, F-91191 Gif-sur-Yvette CEDEX (France)

We show that anisotropies in transverse-momentum distributions provide an unambiguous signature of transverse collective flow in ultrarelativistic nucleus-nucleus collisions. We define a measure of the anisotropy from experimental observables. The anisotropy coming from collective effects is estimated quantitatively using a hydrodynamical model, and compared to the anisotropy originating from finite multiplicity fluctuations. We conclude that collective behavior could be seen in Pb-Pb collisions if a few hundred particle momenta were measured in a central event.

OSTI ID:
7277652
Journal Information:
Physical Review, D (Particles Fields); (United States), Vol. 46:1; ISSN 0556-2821
Country of Publication:
United States
Language:
English