2006/10/16 by I. Arsene et al., Ionut Cristian Arsene, I. G. Bearden +49
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #nucl-ex
paper · pdf · doi:10.1016/j.physletb.2007.05.017
published as Phys.Lett.B650:219-223,2007
arxiv created 2006/10/16 · openalex publication_date 2007/05/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
We present spectra of charged pions and protons in 0–10% central Au + Au collisions at s N N = 200 GeV at mid-rapidity ( y = 0 ) and forward pseudorapidity ( η = 2.2 ) measured with the BRAHMS experiment at RHIC. The spectra are compared to spectra from p + p collisions at the same energy scaled by the number of binary collisions. The resulting nuclear modification factors for central Au + Au collisions at both y = 0 and η = 2.2 exhibit suppression for charged pions but not for (anti-) protons at intermediate p T . The p ¯ / π − ratios have been measured up to p T ∼ 3 GeV / c at the two rapidities and the results indicate that a significant fraction of the charged hadrons produced at intermediate p T range are (anti-) protons at both mid-rapidity and η = 2.2 .