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Antinori, F; Bacon, P.A; Badalà, A; Barbera, R; Belogianni, A; Bhasin, A; Bloodworth, I.J; Bombara, M; Bruno, G.E; Bull, S.A; Caliandro, R; Campbell, M; Carena, W; Carrer, N; Clarke, R.F; Dainese, A; de Haas, A.P; de Rijke, P.C; Di Bari, D; Di Liberto, S; Divià, R; Elia, D; Evans, D; Feofilov, G.A; Fini, R.A; Ganoti, P; Ghidini, B; Grella, G; Helstrup, H; Hetland, K.F; Holme, A.K; Jacholkowski, A; Jones, G.T; Jovanovic, P; Jusko, A; Kamermans, R; Kinson, J.B; Knudson, K; Kolozhvari, A.A; Kondratiev, V; Králik, I; Kravčáková, A; Kuijer, P; Lenti, V; Lietava, R; Løvhøiden, G; Manzari, V; Martinská, G; Mazzoni, M.A; Meddi, F; Michalon, A; Morando, M; Nappi, E; Navach, F; Norman, P.I; Palmeri, A; Pappalardo, G.S; Pastirčák, B; Pišút, J; Pišútová, N; Posa, F; Quercigh, E; Riggi, F; Röhrich, D; Romano, G; Šafařı́k, K; Šándor, L; Schillings, E; Segato, G; Sené, M; Sené, R; Snoeys, W; Soramel, F; Spyropoulou-Stassinaki, M; Staroba, P; Toulina, T.A; Turrisi, R; Tveter, T.S; Urbán, J; Valiev, F; van den Brink, A; van de Ven, P; Vande Vyvre, P; van Eijndhoven, N; van Hunen, J; Vascotto, A; Vik, T; Villalobos Baillie, O; Vinogradov, L; Virgili, T; Votruba, M.F; Vrláková, J; Závada, P
Physics letters. B, 08/2004, Letnik: 595, Številka: 1-4Journal Article
A measurement of strange baryon and antibaryon production in Pb–Pb collisions has been carried out by the NA57 experiment at the CERN SPS, with 40 and 158 AGeV/c beam momentum. Results on Λ, Ξ and Ω hyperon yields at mid-rapidity in the most central 53% of Pb–Pb collisions at 40 AGeV/c are presented and compared with those obtained at higher energy, in the same collision centrality range. The Λ and Ξ− yields per unit rapidity stay roughly constant while those of Ω−, Λ̄, Ξ̄+ and Ω̄+ increase when going to the higher SPS energy. Hyperon yields at the SPS are compared with those from the STAR experiment in sNN=130 GeV Au–Au collisions at RHIC.
