First Direct Measurement of Jets in $\sqrt{s_{NN}}=200$ GeV Heavy Ion Collisions by STAR

Abstract

We present the first measurement of reconstructed jets in ultra-relativistic heavy ion collisions. Utilizing the large coverage of the STAR Time Projection Chamber and Electromagnetic Calorimeter, we apply several modern jet reconstruction algorithms and background subtraction techniques and explore their systematic uncertainties in heavy ion events. The differential spectrum for inclusive jet production in central Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV is presented. In order to assess the jet reconstruction biases, this spectrum is compared with the jet cross section measured in $\sqrt{s}=200$ GeV p+p collisions scaled by the number of binary N-N collisions to account for nuclear geometric effects.

Proceedings of the 3rd International Conference on Hard and Electro- Magnetic Probes of High-Energy Nuclear Collisions 8-14 June 2008, Illa da Toxa (Galicia-Spain)

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• Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
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Cited by in corpus (7)

• Antiangular Ordering of Gluon Radiation in QCD Media
• Q-PYTHIA: a medium-modified implementation of final state radiation
• Jet Reconstruction in Heavy Ion Collisions
• Fluctuations and asymmetric jet events in PbPb collisions at the LHC
• The theory and phenomenology of jets in nuclear collisions
• Q-PYTHIA - a Monte Carlo implementation for jet quenching
• On angular ordering in medium-induced radiation