Non-Abelian feature of parton energy loss in energy dependence of jet quenching in high-energy heavy-ion collisions

One of the non-Abelian features of parton energy loss is the ratio DeltaE(g)/DeltaE(q)=9/4 between gluon and quark jets. Since jet production rate is dominated by quark jets at high x(T)=2p(T)/roots and by gluon jets at low x(T), high p(T) hadron suppression in high-energy heavy-ion collisions should reflect such a non-Abelian feature. Within a leading-order perturbative QCD parton model that incorporates transverse expansion and Woods-Saxon nuclear distribution, the energy dependence of large p(T)similar to5-20 GeV/c hadron suppression is found to be sensitive to the non-Abelian feature of parton energy loss and could be tested by data from low-energy runs at Brookhaven National Laboratory's relativistic heavy-ion collider or data from the large hadron collider.