Dynamical Scaling Law for Jet Tomography

Carlos. A Salgado, Urs Achim Wiedemann
2002 Physical Review Letters  
Medium modifications of parton fragmentation provide a novel tomographic tool for the study of the hot and dense matter created in ultrarelativistic nucleus-nucleus collisions. Their quantitative analysis, however, is complicated by the strong dynamical expansion of the collision region. Here, we establish for the multiple scattering induced gluon radiation spectrum a scaling law which relates medium effects in a collision of arbitrary dynamical expansion to that in an equivalent static
more » ... . Based on this scaling, we calculate for typical kinematical values of the RHIC and LHC heavy ion programs medium-modified parton fragmentation functions for heavy ion collisions with realistic dynamical expansion.
doi:10.1103/physrevlett.89.092303 pmid:12190392 fatcat:x5pzw2syzbhefod3nxxtzcxdqe