Enhanced strange baryon production in Au+Au collisions compared to p+p at {radical}{ovr s}{sub NN} = 200 GeV.

Journal Article · Tue Jan 01 04:00:00 EST 2008 · Phys. Rev. C

DOI:https://doi.org/10.1103/PhysRevC.77.044908· OSTI ID:966042

Abelev, B I; Aggarwal, M M; Ahammed, Z; Anderson, B D; Arkhipkin, D; Krueger, K; Spinka, H M; Underwood, D G; McClain, C J

We report on the observed differences in production rates of strange and multistrange baryons in Au+Au collisions at {radical}s{sub NN} = 200 GeV compared to p+p interactions at the same energy. The strange baryon yields in Au+Au collisions, when scaled down by the number of participating nucleons, are enhanced relative to those measured in p+p reactions. The enhancement observed increases with the strangeness content of the baryon, and it increases for all strange baryons with collision centrality. The enhancement is qualitatively similar to that observed at the lower collision energy {radical}s{sub NN} = 17.3 GeV. The previous observations are for the bulk production, while at intermediate p{sub T},1 < p{sub T} < 4 GeV/c, the strange baryons even exceed binary scaling from p+p yields.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; NSF; Swiss NSF
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 966042
• Report Number(s): ANL-HEP-PR-09-91
• Journal Information: Phys. Rev. C, Journal Name: Phys. Rev. C Journal Issue: 2008 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
HYPERONS
NUCLEONS
PRODUCTION
STRANGENESS