Rapidity and centrality dependence of proton and antiproton production from Au-197+Au-197 collisions at root S-NN=130 GeV

N ov 2 00 2 1 Measurements of Photon and π 0 Production in Heavy Ion Collisions at RHIC

Inclusive transverse momentum spectra of photons and π 0 s about mid–rapidity are presented for 197 Au+ 197 Au collisions at √ s NN = 130 GeV. Photon pair conversions have been reconstructed from charged tracks measured with the central Time Projection Chamber (TPC) of STAR. Contributions of the π 0 → γγ decay in the inclusive photon spectra have been studied. It was found that this contributio...

Antiparticle to particle ratios and identified hadron spectra in Cu+Cu and Au+Au collisions

New results on antiparticle to particle ratios in Cu+Cu and Au+Au collisions at √ s NN = 62.4 and 200 GeV from the PHOBOS experiment at RHIC are presented. Transverse momentum spectra of pions, kaons, protons and antiprotons from Au+Au collisions at √ s NN = 62.4 GeV close to mid-rapidity are also discussed. Antiparticle to particle ratios are found to be remarkably independent of the collision...

The rapidity dependence of the proton - to - pion ratio in Au + Au and p + p collisions at √ s NN = 62 . 4 and 200

The proton-to-pion yield ratios measured in the BRAHMS experiment for Au+Au and p+p collisions at √ s NN = 62.4 GeV and √ s NN = 200 GeV are presented as a function of transverse momentum and collision centrality within the pseudorapidity range 0 ≤ η ≤ 3.8. A strong pseu-dorapidity dependence of these ratios is observed. In Au+Au collisions at √ s NN = 200 GeV, η ≈ 2.2, and at √ s NN = 62.4 GeV...

Centrality and pseudorapidity dependence of charged hadron production at intermediate p(T) in Au plus Au collisions at root s(NN)=130 GeV

dNch/dη in Heavy Ion Collisions at Mid-rapidity

The PHENIX experiment at RHIC has measured transverse energy and charged particle multiplicity at mid-rapidity in Au + Au collisions at √ s NN = 19.6, 130, 62.4 and 200 GeV as a function of centrality. The presented results are compared to measurements from other RHIC experiments, and experiments at lower energies. The √ s NN dependence of dET /dη and dNch/dη per pair of participants is consist...