Centrality Dependent Particle Production at $y=0$ and $y\sim 1$ in Au+Au Collisions at sqrt(sNN)=200GeV

Abstract

Particle production of identified charged hadrons, ${\pi }^{\pm }$, $K^{\pm }$, $p$, and $\bar{p}$ in Au+Au collisions at $\sqrt{(}snn)=$ 200 GeV has been studied as a function of transverse momentum and collision centrality at $y=0$ and $y\sim 1$ by the BRAHMS experiment at RHIC. Significant collective transverse flow at kinetic freeze-out has been observed in the collisions. The magnitude of the flow rises with the collision centrality. Proton and kaon yields relative to the pion production increase strongly as the transverse momentum increases and also increase with centrality. Particle yields per participant nucleon show a weak dependence on the centrality for all particle species. Hadron production remains relatively constant within one unit around midrapidity in Au+Au collisions at $\sqrt{(}snn)=$ 200 GeV.

arXiv comment52 authors, 8 pages, 12 Figures, 3 Tables, submitted to PRC

References in corpus (22)

• Experimental and Theoretical Challenges in the Search for the Quark Gluon Plasma: The STAR Collaboration's Critical Assessment of the Evidence from RHIC Collisions
• Formation of dense partonic matter in relativistic nucleus-nucleus collisions at RHIC: Experimental evaluation by the PHENIX collaboration
• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• The PHOBOS Perspective on Discoveries at RHIC
• Thermal phenomenology of hadrons from 200 AGeV S+S collisions
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Parton coalescence and antiproton/pion anomaly at RHIC
• Scaling behavior at high p_T and the p/pi ratio
• Observable implications of geometrical and dynamical aspects of freeze-out in heavy ion collisions
• Pseudorapidity distributions of charged particles from Au+Au collisions at the maximum RHIC energy, Sqrt(s_NN) = 200 GeV
• Nuclear Stopping in Au+Au Collisions at sqrt(sNN) = 200 GeV
• Matter in extremis: ultrarelativistic nuclear collisions at RHIC
• Charged Meson Rapidity Distributions in central Au+Au Collisions at sqrt(s_nn) = 200 GeV
• Can Gluons Trace Baryon Number?
• Mid-rapidity $\Lambda$ and $\bar{\Lambda }$ Production in Au+Au Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV
• Colour Deconfinement in Nuclear Collisions
• Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV
• Centrality Dependence of Kaon Yields in Si+A and Au+Au Collisions at Relativistic Energies
• Kaon Production and Kaon to Pion Ratio in Au+Au Collisions at $\snn=130$ GeV
• Net baryon density in Au+Au collisions at the Relativistic Heavy Ion Collider
• Forward and midrapidity like-particle ratios from p+p collisions at sqrt(s)=200 GeV
• Systematics of mid-rapidity K-/pi ratio in heavy-ion collisions

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