Decorrelation of forward dijets in DIS off nuclei

Details Decorrelation of forward dijets in DIS off nuclei Decorrelation of forward dijets in DIS off nuclei

2003-06-04

arxiv.org/abs/hep-ph/0306038v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, Latex, 3 figures

Scientific paper

Based on the color dipole QCD approach we discuss the multiple scattering mechanism (MSM) of suppression of back-to-back azimuthal correlations of high $p_{T}$ forward dijets in DIS off nuclei. We quantify the effect in terms of acoplanarity/decorrelation momentum of jets. For hard dijets the decorrelation momentum is found to be of the order of the nuclear saturation momentum $Q_A$. Minijets with the transverse momentum below the saturation scale are proved to be completely decorrelated. The analysis of DIS indicates that in heavy ion collisions the contribution of MSM to the reactions dynamics can be of the order of magnitude of the decorrelation effect observed at RHIC.

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