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arXiv · 1106.1106

Comparison of Jet Quenching Formalisms for a Quark-Gluon Plasma "Brick"

Nestor Armesto·Brian Cole·Charles Gale·William A. Horowitz·Peter Jacobs·Sangyong Jeon·Marco van Leeuwen·Abhijit Majumder·Berndt Muller·Guang-You Qin·Carlos A. Salgado·Bjorn Schenke·Marta Verweij·Xin-Nian Wang·Urs Achim Wiedemann
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Abstract

We review the currently available formalisms for radiative energy loss of a high-momentum parton in a dense strongly interacting medium. The underlying theoretical framework of the four commonly used formalisms is discussed and the differences and commonalities between the formalisms are highlighted. A quantitative comparison of the single gluon emission spectra as well as the energy loss distributions is given for a model system consisting of a uniform medium with a fixed length of L=2 fm and L=5 fm (the `Brick'). Sizable quantitative differences are found. The largest differences can be attributed to specific approximations that are made in the calculation of the radiation spectrum.

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Nestor Armesto, Brian Cole, Charles Gale, William A. Horowitz, Peter Jacobs, Sangyong Jeon, Marco van Leeuwen, Abhijit Majumder, Berndt Muller, Guang-You Qin, Carlos A. Salgado, Bjorn Schenke, Marta Verweij, Xin-Nian Wang, Urs Achim Wiedemann. 2011-06-06. Comparison of Jet Quenching Formalisms for a Quark-Gluon Plasma "Brick". https://doi.org/10.1103/physrevc.86.064904

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