Radiative and Collisional Energy Loss, and Photon-Tagged Jets at RHIC

TL;DR

This paper models jet suppression in quark-gluon plasma at RHIC by combining radiative and collisional energy loss mechanisms with hydrodynamic medium modeling, providing detailed predictions for photon-tagged jet suppression.

Contribution

It introduces a comprehensive calculation of jet and photon-tagged jet suppression at RHIC, integrating radiative and elastic energy loss within a hydrodynamic medium.

Findings

Quantitative predictions of jet suppression at RHIC.

Analysis of photon-tagged jet modification.

Inclusion of both radiative and collisional energy loss mechanisms.

Abstract

The suppression of single jets at high transverse momenta in a quark-gluon plasma is studied at RHIC energies, and the additional information provided by a photon tag is included. The energy loss of hard jets traversing through the medium is evaluated in the AMY formalism, by consistently taking into account the contributions from radiative events and from elastic collisions at leading order in the coupling. The strongly-interacting medium in these collisions is modelled with (3+1)-dimensional ideal relativistic hydrodynamics. Putting these ingredients together with a complete set of photon-production processes, we present a calculation of the nuclear modification of single jets and photon-tagged jets at RHIC.