Strange Baryon Resonance Production in {radical}(s{sub NN})=200 GeV p+p and Au+Au Collisions

Journal Article · Fri Sep 29 00:00:00 EDT 2006 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.97.132301· OSTI ID:20860874

Abelev, B I; Bielcik, J; Bielcikova, J; Caines, H; Catu, O; Chikanian, A; Du, F; Finch, E; Harris, J W; Heinz, M; Lamont, M A. C.; Lin, G; Majka, R; Nattrass, C; Salur, S; Sandweiss, J; Smirnov, N; Witt, R ^[1]; Aggarwal, M M; Bhati, A K ^[2]

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1. Yale University, New Haven, Connecticut 06520 (United States)
2. Panjab University, Chandigarh 160014 (India)

We report the measurements of {sigma}(1385) and {lambda}(1520) production in p+p and Au+Au collisions at {radical}(s{sub NN})=200 GeV from the STAR Collaboration. The yields and the p{sub T} spectra are presented and discussed in terms of chemical and thermal freeze-out conditions and compared to model predictions. Thermal and microscopic models do not adequately describe the yields of all the resonances produced in central Au+Au collisions. Our results indicate that there may be a time span between chemical and thermal freeze-out during which elastic hadronic interactions occur.

• OSTI ID: 20860874
• Journal Information: Physical Review Letters, Vol. 97, Issue 13; Other Information: DOI: 10.1103/PhysRevLett.97.132301; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COLLIDING BEAMS
COLLISIONS
FREEZING OUT
GEV RANGE 100-1000
GOLD 197 BEAMS
GOLD 197 REACTIONS
GOLD 197 TARGET
LAMBDA-1520 BARYONS
PROTON-PROTON INTERACTIONS
RESONANCE
SIGMA-1385 BARYONS