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

Alberto Accardi·Miklos Gyulassy
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Abstract

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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Alberto Accardi, Miklos Gyulassy. 2004-02-27. Cronin effect and geometrical shadowing in d+Au collisions: pQCD vs. CGC. https://doi.org/10.1088/0954-3899%2F30%2F8%2F040

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