Prompt photons at RHIC

Abstract

We calculate the inclusive cross section for prompt photon production in heavy-ion collisions at RHIC energies ($\sqrt{s}=130$ GeV and $\sqrt{s}=200$ GeV) in the central rapidity region including next-to-leading order, $O({\alpha }_{em}{\alpha }_s^2)$, radiative corrections, initial state nuclear shadowing and parton energy loss effects. We show that there is a significant suppression of the nuclear cross section, up to $\sim 30$ at $\sqrt{s}=200$ GeV, due to shadowing and medium induced parton energy loss effects. We find that the next-to-leading order contributions are large and have a strong $p_t$ dependence.

9 pages, 5 figures, expanded discussion of the K factor

References in corpus (2)

• Energy loss in perturbative QCD
• Examination of direct-photon and pion production in proton-nucleon collisions

Cited by in corpus (13)

• High energy photons from passage of jets through quark gluon plasma
• Direct Photons from Relativistic Heavy-Ion Collisions
• Probing the QCD equation of state with thermal photons in nucleus-nucleus collisions at RHIC
• Induced photon emission from quark jets in ultrarelativistic heavy-ion collisions
• The Origin of Large-p_T pi^0 Suppression at RHIC
• Photon tagged correlations in heavy ion collisions
• Electromagnetic Signatures of the Color Glass Condensate: Dileptons
• Nuclear shadowing and prompt photons at relativistic hadron colliders
• Nuclear Effects in Prompt Photon Production at the Large Hadron Collider
• Quenching of photon and pion spectra at intermediate RHIC energy
• Enhancement of prompt photons in ultrarelativistic proton-proton collisions from nonlinear gluon evolution at small-$x$
• Photon Radiation and Dilepton Production Induced by Rescattering in Strong Interacting Medium
• Physics with prompt photons at SPD