Final-state interaction as the origin of the Cronin effect.
- Published Article
Physical review letters
- Publication Date
Aug 20, 2004
The Cronin effect that refers to the enhancement of hadron spectra at intermediate p(T) with increasing A in pA collisions is traditionally explained in terms of the broadening of the parton transverse momentum in the initial state. We show that recent data on the nuclear modification factor at eta=0 for d+Au collisions can be understood in terms of the recombination of soft and shower partons in the final state. It is the centrality dependence of the soft parton density that leads to the Cronin effect.
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The corresponding record at NLM can be accessed at https://www.ncbi.nlm.nih.gov/pubmed/15447176