System size dependence of elliptic flows in relativistic heavy-ion collisions

Details System size dependence of elliptic flows in relativistic heavy-ion collisions System size dependence of elliptic flows in relativistic heavy-ion collisions

2005-05-16

arxiv.org/abs/nucl-th/0505044v2

Phys.Lett. B634 (2006) 205-209

Physics

Nuclear Physics

Nuclear Theory

5 pages, 5 figures, revised version, to appear in PLB

Scientific paper

10.1016/j.physletb.2006.01.037

The elliptic flows in both Cu+Cu and Au+Au collisions at the Relativistic Heavy Ion Collider are studied in a multi-phase transport model. For both collisions at same reduced impact parameter and minimum bias collisions, the elliptic flow of partons in Cu+Cu collisions is about a factor of three smaller than that in Au+Au collisions at same energy. The reduction factor is similar to the ratio of the sizes of the two colliding systems and is also related to the combined effects of initial energy density and spatial elliptic deformation in the two reactions. A similar system size dependence is also seen in the elliptic flow of charged hadrons from minimum bias collisions.

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