Elliptic flow and fixedpTsuppression in a final state interaction model

Abstract

It has been shown that a final state interaction model, used to describe J/{psi} suppression, can also describe the fixed p{sub T} suppression of the {pi}{sup 0} (and charged pion) yield at all values of p{sub T}, with a final state interaction cross section {sigma} close to one milibarn. We propose an extension of the model to the pion motion in the transverse plane, which introduces a dependence of the suppression on the azimuthal angle {theta}{sub R}. Using the same value of {sigma}, we obtain values of the elliptic flow v{sub 2} close to the experimental ones, for all values of p{sub T}, including the soft-p{sub T} region.