Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2011-11-08
Physics
Nuclear Physics
Nuclear Experiment
7 pages, 8 figures. To appear in the proceedings of the 6th International Workshop High-pT physics at LHC 2011
Scientific paper
Hard scattered partons are predicted to be well calibrated probes of the hot and dense medium produced in heavy ion collisions. Interactions of these partons with the medium w ill result in modifications of internal jet structure in Au+Au events compared to that observed in the p+p/d+Au reference. Full jet reconstruction is a promising tool to measu re these effects without the significant biases present in measurements with high-$\pT$ hadrons. One of the most significant challenges for jet reconstruction in the heavy ion environment comes from the correct characterization of the background fluctuations. The jet mome ntum irresolution due to background fluctuations has to be understood in order to recover the correct jet spectrum. Recent progress in jet reconstruction methodology is discu ssed, as well as recent measurements from p+p, d+Au and Au+Au collisions at $\sqrt{s_\mathrm{NN}}=200 \gev$.
for the STAR Collaboration
Kapitan Jan
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