2008/05/03 by G G Barnaföldi, G. G. Barnafoldi, G Fai +7
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1088/0954-3899/35/10/104066
published as J.Phys.G35:104066,2008 · QM 2008, Submitted to Jour. Phys. G, 4 pages and 4 figures
arxiv created 2008/05/03 · openalex publication_date 2008/09/17 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Nuclear modification factors for pion production in AuAu and CuCu collisions are analyzed at very high transverse momenta. At p(T) greater than or similar to 10 GeV/c, the RAA(pT) is determined mostly by the initial-state nuclear modifications (e. g. the EMC effect) and the non-Abelian jet energy loss in the final state. At high momenta these effects together are strong enough to suppress RAA(p(T)) to below 1 at RHIC energies. We display results using HKN shadowing in our pQCD-improved parton model. Result of a similar calculation at LHC energies for PbPb collisions is also displayed. Based on dN/dy estimates, a larger opacity value, L/lambda(g) approximate to 10 +/- 2, is used for the produced partonic matter in central collisions at the LHC.