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arXiv · 1210.6417

A running coupling explanation of the surprising transparency of the QGP at LHC

Alessandro Buzzatti·Miklos Gyulassy
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Abstract

The CUJET Monte Carlo Jet Energy loss model is applied to predict the jet flavor, centrality and density dependence of the nuclear modification factor $R_{AA}$ at RHIC and LHC. Running coupling effects due to combined $x$, $k_\perp$ and $q_\perp$ evolution are included for the first time in the dynamical DGLV opacity expansion framework and are shown to provide a natural dynamical QCD tomographic solution to the surprising transparency of the quark gluon plasma produced at LHC as suggested by $p_\perp>10$ GeV $R_{AA}$ data from ALICE, ATLAS, and CMS.

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Alessandro Buzzatti, Miklos Gyulassy. 2012-10-24. A running coupling explanation of the surprising transparency of the QGP at LHC. https://doi.org/10.1016/j.nuclphysa.2013.02.133

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