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Nucl. Phys. B483
- Publisher
- Springer Journals
- Copyright
- Copyright © 2006 by Akadémiai Kiadó
- Subject
- Physics; Nuclear Physics, Heavy Ions, Hadrons
- ISSN
- 1219-7580
- eISSN
- 1588-2675
- DOI
- 10.1556/APH.27.2006.4.10
- Publisher site
- See Article on Publisher Site
Abstract
Non-Abelian energy loss in quark gluon plasmas is shown to lead to novel hadron ratio suppression patterns in ultrarelativistic nuclear collisions. Here we investigate pion and kaon production in pp and AA collisions in a perturbative QCD frame, suppression pattern and hadron ratios. The K−/K+ and K+/π+ ratios are found to be most sensitive to the opacity (density) of the plasma. Experimental data indicate that the fragmentation dominated pQCD region will be reached only at higher p T; in an intermediate p Tregion other particle production mechanisms dominate the K/π ratios.
Journal
Acta Physica Hungarica Series A, Heavy Ion Physics – Springer Journals
Published: Aug 29, 2009