Excitation functions of baryon anomaly and freeze-out properties at RHIC-PHENIX

Abstract

The intermediate $p_T$ region (2 - 5 GeV/$c$) in central Au+Au collisions at RHIC has a rich physics content. The (anti)proton to pion ratio at the intermediate $p_T$ gives us a powerful tool to investigate the bulk properties of the hot and dense matter created at RHIC and their hadronization processes. We present the preliminary results of identified charged hadron spectra at the lower beam energies at RHIC. The excitation function of (anti)proton to pion ratios from SPS to RHIC are shown. We also discuss the onset of the baryon enhancement at the high energy heavy ion collisions.

arXiv comment4 pages, 3 figures, Quark Matter 2006 conference proceedings

References in corpus (8)

• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Hadronization in heavy ion collisions: Recombination and fragmentation of partons
• Parton coalescence and antiproton/pion anomaly at RHIC
• Suppressed pi^0 Production at Large Transverse Momentum in Central Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Scaling behavior at high p_T and the p/pi ratio
• Scaling properties of proton and anti-proton production in sqrt(s_NN) = 200 GeV Au + Au collisions
• PHENIX Studies of the Scaling Properties of Elliptic Flow at RHIC
• Search for the onset of baryon anomaly at RHIC-PHENIX

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• Multi-Source Thermal Model Describing Transverse Momentum Spectra of Final-State Particles in High Energy Collisions
• Hydrodynamic evolution and jet energy loss in Cu+Cu collisions