Unveiling the nuclear structure at small x using azimuthal correlations in dA collisions

Details Unveiling the nuclear structure at small x using azimuthal correlations in dA collisions Unveiling the nuclear structure at small x using azimuthal correlations in dA collisions

2010-12-19

arxiv.org/abs/1012.4213v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contribution to the proceedings of the 25th Nishinomiya-Yukawa Memorial International Workshop at Yukawa Institute for Theoret

Scientific paper

We discuss azimuthal correlations in double inclusive hadron production in high energy $dA$ collisions at RHIC. We argue that the leading logarithmic approximation is inadequate for description of experimental data. Realistic shape of the azimuthal correlation function is obtain only if we keep terms that are finite in the rapidity difference between the produced hadrons. Likewise, transverse momentum dependence of parton distribution functions in both deuteron and nucleus must be retained. We observe depletion of the back-to-back correlations in central $dAu$ collisions in the forward direction consistent with the Color Glass Condensate predictions.

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