Cronin Effect and High-p_T Suppression in pA Collisions

Details Cronin Effect and High-p_T Suppression in pA Collisions Cronin Effect and High-p_T Suppression in pA Collisions

2003-07-03

arxiv.org/abs/hep-ph/0307037v2

Phys.Rev.D68:094013,2003

Physics

High Energy Physics

High Energy Physics - Phenomenology

32 pages, 8 figures, v2: extended and improved discussion, references added

Scientific paper

10.1103/PhysRevD.68.094013

We review the predictions of the theory of Color Glass Condensate for gluon production cross section in p(d)A collisions. We demonstrate that at moderate energies, when the gluon production cross section can be calculated in the framework of McLerran-Venugopalan model, it has only partonic level Cronin effect in it. At higher energies/rapidities corresponding to smaller values of Bjorken x quantum evolution becomes important. The effect of quantum evolution at higher energies/rapidities is to introduce suppression of high-p_T gluons slightly decreasing the Cronin enhancement. At still higher energies/rapidities quantum evolution leads to suppression of produced gluons at all values of p_T.

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