Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2011-01-13
JHEP 1104:027,2011
Physics
High Energy Physics
High Energy Physics - Theory
30 pages, 10 figures
Scientific paper
10.1007/JHEP04(2011)027
Theoretical studies of jet stopping in strongly-coupled QCD-like plasmas have used gauge-gravity duality to find that the maximum stopping distance scales like E^{1/3} for large jet energies E. In recent work studying jets that are created by finite-size sources in the gauge theory, we found an additional scale: the typical (as opposed to maximum) jet stopping distance scales like (EL)^{1/4}, where L is the size of the space-time region where the jet is created. In this paper, we show that the results of our previous, somewhat involved computation in the gravity dual, and the (EL)^{1/4} scale in particular, can be very easily reproduced and understood in terms of the distance that high-energy particles travel in AdS_5-Schwarzschild space before falling into the black brane. We also investigate how stopping distances depend on the conformal dimension of the source operator used to create the jet.
Arnold Peter
Vaman Diana
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