Review of High-pT results at RHIC, A. M. Hamed, Cyclotron Institute, Texas A&M University, College Station, Texas USA − High-pT particles are resulted from jet fragmentation of partons scattered with large momentum transfer $Q2, so called hard-scattering. Since large momentum transfer is fundamentally associated with a short time scale, the hard-scattered partons are expected to experience the early stages of the system created in the heavy ion collision.  Furthermore, in this kinematical region the particle production can be described in the framework of perturbative Quantum Chromodynamics (QCD) in terms of the scattered asymptotically free point like partons.

 

The measurements of the high-pT particle production incited a great deal of interest in heavy ion collisions due to the fact that jet energy loss was among the first signatures suggested for the diagnostics of the quark-gluon matter. Many methods exploiting particles with different coupling to the medium have been deployed in order to study the modifications in the jet properties in heavy ion collisions compared to the produced jets in nucleon-nucleon collisions at the same energy.   A review of the high-pT phenomena at the Relativistic Heavy Ion Collisions (RHIC) will be presented. A particular focus of this talk is to discuss to what extent the produced particles with high-pT can be taken as evidence for the RHIC paradigm of jet quenching.