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Article Dans Une Revue Physical Review C Année : 2016

Linear and cubic response to the initial eccentricity in heavy-ion collisions

Résumé

We study the relation between elliptic flow, v2 and the initial eccentricity, ε2, in heavy-ion collisions , using hydrodynamic simulations. Significant deviations from linear eccentricity scaling are seen in more peripheral collisions. We identify the mechanism responsible for these deviations as a cubic response, which we argue is a generic property of the hydrodynamic response to the initial density profile. The cubic response increases elliptic flow fluctuations, thereby improving agreement of initial condition models with experimental data.
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cea-01323565 , version 1 (30-05-2016)

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Jacquelyn Noronha-Hostler, Li Yan, Fernando G Gardim, Jean-Yves Ollitrault. Linear and cubic response to the initial eccentricity in heavy-ion collisions. Physical Review C, 2016, 93 (01), pp.4909 ⟨10.1103/PhysRevC.93.014909⟩. ⟨cea-01323565⟩
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