Abstract
The first results of single jet observables in Pb+Pb collisions at TeV measured with the ATLAS detector at the LHC are presented. Full jets are reconstructed with the anti-kt algorithm with R = 0.2 and 0.4, using an event-by-event subtraction procedure to correct for the effects of the underlying event including elliptic flow. The geometrically-scaled ratio of jet yields in central and peripheral events, RCP, indicates a clear suppression of jets with ET > 100 GeV. The transverse and longitudinal distributions of jet fragments are also presented. We find little or no substantial change to the fragmentation properties and no significant change in the level of suppression when moving to the larger jet definition.
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