Di-jet Correlation in Au+Au and Cu+Cu Collisions from PHENIX

Jet Tomography Studies in AuAu Collisions at RHIC Energies

Recent RHIC results on pion production in AuAu collision at √ s = 130 and 200 AGeV display a strong suppression effect at high pT . This suppression can be connected to final state effects, namely jet energy loss induced by the produced dense colored matter. Applying our pQCD-based parton model we perform a quantitative analysis of the measured suppression pattern and determine the opacity of t...

Jet and Di-Jet production in Photon-Photon collisions

During the past two years different analyses [1,2,3,4] of jet and di-jet production from real photons scattering at LEP have been presented. A unique computation it is available in the literature [5,6] at NLO for this process. This computation is based on the slicing method to cancel analytically virtual and infrared divergences. This technique relies on an approximate treatment of the phase sp...

Two-particle Direct Photon-Jet Correlation Measurements in PHENIX

Various 2-particle direct photon-hadron correlation yields in p + p and Au + Au collisions at √ sNN = 200 GeV are presented. The per-trigger yield of direct photon hadron pairs from direct-photon-jet correlations is obtained by a statistical subtraction of the decay photon pairs from inclusive photon-hadron sample. The decay photon pertrigger yields are estimated from the measured π-hadron by m...

Au + Au collisions in PHENIX

From mach cone to reappeared jet: What do we learn from PHENIX results on non-identified jet correlation?

Abstract. High pT jets are known to be strongly modified by the dense, strongly interacting medium created in heavy-ion collisions. The jet signal, extracted from two particle ∆φ correlation, shows a systematic evolution of these modifications as function of pT and centrality. At intermediate pT , both near side and away side correlations are modified. But the modifications are much stronger at...