Cronin effect and geometrical shadowing in d+Au collisions: pQCD vs. CGC

Details Cronin effect and geometrical shadowing in d+Au collisions: pQCD vs. CGC Cronin effect and geometrical shadowing in d+Au collisions: pQCD vs. CGC

2004-02-27

arxiv.org/abs/nucl-th/0402101v1

J.Phys.G30:S969-S974,2004

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures. Contributed talk at Quark Matter 2004 (QM2004), Oakland, January 11-17, 2004

Scientific paper

10.1088/0954-3899/30/8/040

Multiple initial state parton interactions in p(d)+A collisions are calculated in a Glauber-Eikonal formalism, which incorporates the competing pattern of low-pT suppression due geometrical shadowing, and a moderate-pT Cronin enhancement of hadron spectra. Dynamical shadowing effects, which are not included in the computation, may be extracted by comparing experimental data to the baseline provided by the Glauber-Eikonal model. Data for neutral pion production at midrapidity show absence of dynamical shadowing in the RHIC energy range, sqrt(s)~20-200 GeV. Recent preliminary data at forward rapidity are addressed, and their interpretation discussed.

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