Improving a radiative plus collisional energy loss model for application to RHIC and LHC

2007/01/31 by Simon Wicks, Miklos Gyulassy, Miklós Gyulassy · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #nucl-th

paper · pdf · doi:10.1088/0954-3899/34/8/s141

published as J.Phys.G34:S989-S993,2007 · Prepared for 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions: Quark Matter 2006 (QM2006), Shanghai, China, 14-20 Nov 2006

arxiv created 2007/06/20 · openalex publication_date 2007/07/17 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

With the QGP opacity computed perturbatively and with the global entropy constraints imposed by the observed d N ch /d y ≈ 1000, radiative energy loss alone cannot account for the observed suppression of single non-photonic electrons. Collisional energy loss is comparable in magnitude to radiative loss for both light and heavy jets. Two aspects that significantly affect the collisional energy loss are examined: the role of fluctuations and the effect of introducing a running QCD coupling as opposed to the fixed α s = 0.3 used previously.

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