Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2009-01-02
Acta Phys.Polon.B39:3281-3308,2008
Physics
Nuclear Physics
Nuclear Theory
Lecture Notes for the Krakow School of Theoretical Physics, XLVIIIe Course, 2008
Scientific paper
We study the fate of the energy deposited by a jet in a heavy ion collision assuming that the medium created is opaque (jets quickly lose energy) and its viscosity is so low that the energy lost by the jet is quickly thermalized. The expectation is that under these conditions the energy deposited gives rise to a Mach cone. We argue that, in general, the behavior of the system is different from the naive expectation and it depends strongly on the assumptions made about the energy and momentum deposited by the jet into the medium. We compare our phenomenological hydrodynamic calculations performed in a static medium for a variety of energy-momentum sources (including a pQCD-based calculation) with the exact strong coupling limit obtained within the AdS/CFT correspondence. We also discuss the observability of hydrodynamical features triggered by jets in experimentally measured two-particle correlations at RHIC.
Betz Barbara
Gyulassy Miklos
Noronha Jorge
Torrieri Giorgio
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