Unitarity cutting rules for hard processes on nuclei

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Schäfer, W.
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Abstract
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Heavy nuclei introduce a new scale into the pQCD description of hard processes on nuclei, the saturation scale, and the familiar linear k_\perp-factorization breaks down. It is replaced by a new concept, the nonlinear k_\perp-factorization. Here we give a brief overview how topological cross sections for hard processes on nuclei are obtained from nonlinear k_\perp-factorization.
Comment: 8 pages, 2 figs, a talk given at the 3rd International Workshop On High-PT Physics At LHC, Tokaj'08; 16-19 Mar 2008, Tokaj, Hungary
Keywords
High Energy Physics - Phenomenology
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