Hyperon production in lead-lead interactions at 40-A-GeV/c and 160-A-GeV/c

The NA57 experiment has measured strange baryon and antibaryon production in Pb-Pb collisions at 40 A GeV/c and 160 A GeV/c beam momenta. This presentation covers strangeness enhancement and transverse spectra from the 160 A GeV/c data, and energy dependence of the particle yields. Enhancement facto...

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Detalles Bibliográficos
Autores principales: Helstrup, H, 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, Fanebust, K, Feofilov, G A, Fini, R A, Ganoti, P, Ghidini, B, Grella, G, 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, Pišútova, N, Posa, F, Quercigh, E, Riggi, F, Röhrich, D, Romano, G, Šafaˇrík, 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
Lenguaje:eng
Publicado: 2004
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1140/epjcd/s2004-03-1705-3
http://cds.cern.ch/record/2633871
Descripción
Sumario:The NA57 experiment has measured strange baryon and antibaryon production in Pb-Pb collisions at 40 A GeV/c and 160 A GeV/c beam momenta. This presentation covers strangeness enhancement and transverse spectra from the 160 A GeV/c data, and energy dependence of the particle yields. Enhancement factors increase with increasing strangeness content of the particle, when production yields from Pb-Pb collisions are compared with those observed in p-Be and p-Pb interactions. The transverse mass spectra have been analysed both with exponential fits and using a transverse flow model.

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