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arXiv · hep-ph/0010230

Prompt photons at RHIC

J. Jalilian-Marian·K. Orginos·I. Sarcevic
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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, $O(α_{em}α_s^2)$, 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.

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J. Jalilian-Marian, K. Orginos, I. Sarcevic. 2000-10-26. Prompt photons at RHIC. https://doi.org/10.1103/physrevc.63.041901

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