Centrality dependence of charged antiparticle to particle ratios near midrapidity in d+Au collisions at {radical}(s{sub NN})=200 GeV

Journal Article · Thu Jul 01 04:00:00 EDT 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.011901· OSTI ID:20695569

Back, B B ^[1]; Baker, M D; Barton, D S; Becker, B; Carroll, A; George, N; Gushue, S; Holzman, B; Pak, R; Sedykh, I; Steinberg, P; Sukhanov, A ^[2]; Ballintijn, M; Busza, W; Decowski, M P; Gulbrandsen, K; Henderson, C; Kane, J L; Kulinich, P; Lee, J W ^[3]

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1. Argonne National Laboratory, Argonne, Illinois 60439-4843 (United States)
2. Brookhaven National Laboratory, Upton, New York 11973-5000 (United States)
3. Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307 (United States); and others

The ratios of the yields of charged antiparticles to particles have been obtained for pions, kaons, and protons near midrapidity for d+Au collisions at {radical}(s{sub NN})=200 GeV as a function of centrality. The reported values represent the ratio of the yields averaged over the rapidity range of 0.1<y{sub {pi}}<1.3 and 0<y{sub K,p}<0.8, where positive rapidity is in the deuteron direction, and for transverse momenta 0.1<p{sub T}{sup {pi}}{sup ,K}<1 GeV/c and 0.3<p{sub T}{sup p}<1 GeV/c. Within the uncertainties, a lack of centrality dependence is observed in all three ratios. The data are compared to results from other systems and model calculations.

• OSTI ID: 20695569
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIPARTICLES
DEUTERON REACTIONS
GEV RANGE
GOLD 197 TARGET
KAONS
MULTIPLE PRODUCTION
NUCLEAR MATTER
NUCLEAR REACTION YIELD
PARTICLE RAPIDITY
PIONS
PROTONS
TRANSVERSE MOMENTUM