학술논문
Hyperon production in lead-lead interactions at 40 and 160 A GeV/c
Document Type
Original Paper
Author
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.; Bari, D. Di; Liberto, S. Di; Divià, R.; Elia, D.; Evans, D.; Fanebust, K.; Feofilov, G.A.; Fini, R.A.; Ganoti, P.; Ghidini, B.; Grella, G.; Helstrup, H.; 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.; Šafařík, 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.; Vyvre, P. Vande; van Eijndhoven, N.; van Hunen, J.; Vascotto, A.; Vik, T.; Baillie, O. Villalobos; Vinogradov, L.; Virgili, T.; Votruba, M.F.; Vrláková, J.; Závada, P.
Source
The European Physical Journal C - Particles and Fields. July 2004 33(1):s618-s620
Subject
Language
English
ISSN
1434-6044
1434-6052
1434-6052
Abstract
Abstract: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.