Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9857291 | Nuclear Physics B - Proceedings Supplements | 2005 | 6 Pages |
Abstract
The relative production rate of high-pT hadrons in deuteron-gold and proton-proton collisions measured at forward rapidities in the BRAHMS experiment is found to be suppressed. Observing other reactions, one may notice that any reaction (forward production of light hadron, Drell-Yan process, heavy flavor production, etc.) expose the same property: the cross section at large xF is suppressed by nuclei. Although it is tempting to interpret this effect as a result of coherence, or color glass condensate, it takes place even at low energies. We demonstrate here that there is a suppression mechanism common for all reactions which can be understood as Sudakov suppression or as a reduced survival probability of a large rapidity gap process in nuclei. This is confirmed by calculations, which provide a good description for all the reactions under consideration.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Nuclear and High Energy Physics
Authors
B.Z. Kopeliovich, J. Nemchik, I.K. Potashnikova, M.B. Johnson, I. Schmidt,