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.

arXiv commentProceedings 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)

References in corpus (14)

• A Brief Introduction to PYTHIA 8.1
• High-Energy-Physics Event Generation with PYTHIA 6.1
• Radiative energy loss of high energy quarks and gluons in a finite volume quark-gluon plasma
• The Catchment Area of Jets
• Evidence from d+Au measurements for final-state suppression of high $p_T$ hadrons in Au+Au collisions at RHIC
• Induced Gluon Radiation in a QCD Medium
• Measurements of Strange Particle Production in $p+p$ Collisions at $\sqrt{s}$= 200 GeV
• Identified hadron spectra at large transverse momentum in p+p and d+Au collisions at \sqrts_NN = 200 GeV
• Direct observation of dijets in central Au+Au collisions at sqrt(s_NN) = 200 GeV
• Common Suppression Pattern of eta and pi^0 Mesons at High Transverse Momentum in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Longitudinal double-spin asymmetry and cross section for inclusive jet production in polarized proton collisions at sqrt(s) = 200 GeV
• Single-Inclusive Jet Production in Polarized pp Collisions at O(alpha_s^3)
• A Cone Jet-Finding Algorithm for Heavy-Ion Collisions at LHC Energies
• High pT in nuclear collisions at SPS, RHIC, and LHC

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