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

Journal Article · Tue Apr 15 00:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.044908· OSTI ID:21189928

Abelev, B I; Barannikova, O; Betts, R R; Callner, J; Garcia-Solis, E; Hofman, D J; Hollis, R S; Iordanova, A; Suarez, M C ^[1]; Aggarwal, M M; Bhati, A K; Kumar, A; Kumar, L; Pruthi, N K ^[2]; Ahammed, Z; Chattopadhyay, S; Mazumdar, M R. Dutta; Ganti, M S; Ghosh, P; Mohanty, B ^[3]

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1. University of Illinois at Chicago, Chicago, Illinois 60607 (United States)
2. Panjab University, Chandigarh 160014 (India)
3. Variable Energy Cyclotron Centre, Kolkata 700064 (India)

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.

• OSTI ID: 21189928
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 77, Issue 4; Other Information: DOI: 10.1103/PhysRevC.77.044908; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ATOM-ATOM COLLISIONS
BARYONS
COLLISIONS
GEV RANGE
GOLD
HYPERONS
INTERACTIONS
NUCLEONS
PROTON-PROTON INTERACTIONS
SCALING
STRANGENESS