Centrality dependent particle production at y=0 and y{approx}1 in Au+Au collisions at {radical}(s{sub NN})= 200 GeV
- University of Bucharest, Bucharest (Romania)
- Niels Bohr Institute, Blegdamsvej 17, University of Copenhagen, Copenhagen DK-2100 (Denmark)
- Brookhaven National Laboratory, Upton, New York 11973 (United States); and others
Particle production of identified charged hadrons, {pi}{sup {+-}},K{sup {+-}},p, and p in Au+Au collisions at {radical}(s{sub NN})= 200 GeV, has been studied as a function of transverse momentum and collision centrality at y=0 and y{approx}1 by the BRAHMS experiment at Brookhaven National Laboratory's Relativistic Heavy-Ion Collider. 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 {radical}(s{sub NN})= 200 GeV.
- OSTI ID:
- 20698851
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 72, Issue 1; Other Information: DOI: 10.1103/PhysRevC.72.014908; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA). BRAHMS Collaboration; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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