Qualitative and quantitative energy loss?

✍ Scribed by W.A. Horowitz

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 360 KB
• Volume: 855
• Category: Article
• ISSN: 0375-9474
• DOI: 10.1016/j.nuclphysa.2011.02.045

✦ Synopsis

Despite the 300% systematic theoretical uncertainty associated with extracting q using current energy loss models due to the collinear approximation, and despite the uncertainties in the initial geometry and corrections due to the fluctuations in the initial overlap of a heavy ion collision, a simultaneous description of high-p T π 0 R AA and v 2 is not possible with current pQCD-based energy loss models. However a good description of out-of-plane R AA as a function of centrality is possible. Alternatively, energy loss models based on AdS/CFT give a better qualitative description of π 0 and non-photonic electron R AA as well as high-p T ratios of p to π -production than those based on pQCD.