Properties of particle production at large transverse momentum in Au+Au and Cu+Cu collisions at RHIC

Particle Production at Large Transverse Momentum in Nucleus-nucleus Collisions*

Based on a multiple hard scattering picture we derived simple relations between inclusive cross sections for large transverse momentum particle production in nucleus-nucleus, nucleon-nucleus and nucleonnucleon scatterings. The relations are compared with the recent data for 1~' production in aa collisions at high energy. Submitted to Physical Review D * Work supported in part by the Department ...

Identified Particle Production at High Transverse Momentum in Nucleus-nucleus Collisions at Rhic

Experimental results for identified hadron spectra in AA collisions at RHIC are reviewed. Jet suppression in central AuAu collisions at 200 GeV is seen in leading meson and baryon spectra at high pt. Enhanced baryon production at intermediate pT (2 < pt < 5 GeV/c) is related to quark content but not its mass. In d+Au collisions Cronin enhancement is observed with larger magnitude for baryons th...

Diffractive J/ψ production in Ultraperipheral AuAu Collisions at RHIC

Analysis of Particle Production at Large Transverse Momentum

An analysis of large transverse momentum data is carried out using local exponents which characterize the dependence of the cross sections on pT and E = (missing mass)2/s. The results of this effective-power analysis allow any model to be critically compared to the data in a simple but meaningful way. Selected models are examined. A survey of the features of the Constituent Interchange Model is...

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...