Abstract

Relativistic heavy-ion collisions offer a unique opportunity to study highly excited dense nuclear matter in the laboratory. We present measurements of identified charged hadron production at different rapidities from Au+Au and p+p collisions at 200 GeV. Coulomb effects on pion spectra in relativistic nuclear collisions at RHIC energies will be investigated. The nuclear modification factors for identified particles show distinct meson/baryon dependence. At high pT the charged pion yields are suppressed by a factor of ~5, while the baryon production is enhanced in Au+Au collisions, when compared to the binary scaled p+p data from the same energy.

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