Sensitivity of Azimuthal Jet Tomography to Early Time Energy-Loss at RHIC and LHC

Details Sensitivity of Azimuthal Jet Tomography to Early Time Energy-Loss at RHIC and LHC Sensitivity of Azimuthal Jet Tomography to Early Time Energy-Loss at RHIC and LHC

2011-06-22

arxiv.org/abs/1106.4564v2

Physics

Nuclear Physics

Nuclear Theory

4 pages, 2 figures, version accepted for publication in J. Phys. G: Nucl. Part. Phys. as conference proceedings for Quark Matt

Scientific paper

We compute the jet path-length dependence of energy-loss for higher azimuthal harmonics of jet-fragments in a generalized model of energy-loss that can interpolate between pQCD and AdS/CFT limits and compare results with Glauber and CGC/KLN initial conditions. We find, however, that even the high-pT second moment is most sensitive to the poorly known early-time evolution during the first fm/c. Moreover, we demonstrate that quite generally the energy and density-dependence leads to an overquenching jet fragments relative to the first LHC $R_{AA}$-data, once the parameters of the energy-loss model are fixed from $R_{AA}$-data at RHIC.

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