Pion Femtoscopy in P+p Collisions at S=200 [square Root of S = 200] Gev

Pion Interferometry in Auau Collisions at √ S Nn =200 Gev

We present preliminary results from a two-pion intensity interferometry analysis from Au+Au collisions at √ s NN =200 GeV measured in the STAR detector at RHIC. The dependence of the apparent pion source on multiplicity and transverse momentum are discussed and compared with preliminary results from d+Au and p+p collisions at the same beam energy.

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...

Cross sections and transverse single-spin asymmetries in forward neutral-pion production from proton collisions at root s=200 GeV

Measurement of the neutral pion cross section in proton - proton collisions at √ s = 200 GeV with PHENIX

The inclusive cross section for neutral pion production in the range 1 < p T < 13 GeV/c in |η| < 0.35 has been measured by the PHENIX experiment in proton-proton collisions at √ s = 200 GeV. An NLO pQCD calculation is, within the experimental and theoretical uncertainties, consistent with the measurement.

Pion interferometry in Au+Au collisions at root s(NN)=200 GeV