Radiative and Collisional Jet Energy Loss in the Quark-Gluon Plasma at RHIC

Abstract

We calculate and compare bremsstrahlung and collisional energy loss of hard partons traversing a quark-gluon plasma. Our treatment of both processes is complete at leading order in the coupling and accounts for the probabilistic nature of the jet energy loss. We find that the nuclear modification factor $R_{AA}$ for neutral ${\pi }^0$ production in heavy ion collisions is sensitive to the inclusion of collisional and radiative energy loss contributions while the averaged energy loss only slightly increases if collisional energy loss is included for parent parton energies $E\gg T$. These results are important for the understanding of jet quenching in Au+Au collisions at $200\mathrm{AGeV}$ at RHIC. Comparison with data is performed applying the energy loss calculation to a relativistic ideal (3+1)-dimensional hydrodynamic description of the thermalized medium formed at RHIC.

4 pages, 3 figures

Cited by in corpus (14)

• Systematic Comparison of Jet Energy-Loss Schemes in a realistic hydrodynamic medium
• Collisional energy loss of a fast heavy quark in a quark-gluon plasma
• Energy and momentum deposited into a QCD medium by a jet shower
• Collisional Energy Loss of a Fast Muon in a Hot QED Plasma
• The evolving distribution of hard partons traversing a hot strongly interacting plasma
• Angular variation of hard back-to-back hadron suppression in heavy-ion collisions
• (medium-modified) Fragmentation Functions
• Photon bremsstrahlung and diffusive broadening of a hard jet
• Photons from nuclear collisions at RHIC energies
• Jet Propagation and Mach-Cone Formation in (3+1)-dimensional Ideal Hydrodynamics
• Memory effects in radiative jet energy loss
• Radiative and Collisional Energy Loss, and Photon-Tagged Jets at RHIC
• Mach cone shock waves at RHIC
• Characterizations of the medium in jet quenching calculations