Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions.
Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions / Antinori, F; Bacon, P.; Badalà, A.; Barbera, R.; Belogianni, A.; Beusch, W.; Bloodworth, I. J.; Bombara, M.; Bruno, Giuseppe Eugenio; Bull, S. A.; Caliandro, R.; Campbell, M.; Carena, W.; Carrer, N.; Clarke, R. F.; Dainese, A.; 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.; Huss, D.; Jacholkowski, A.; Jones, G. T.; Jovanovic, P.; Jusko, A.; Kamermans, R.; Kinson, J. B.; Knudson, K.; Kondratiev, V.; Králik, I.; Kravčáková, A.; Kuijer, P.; Lenti, V.; Lietava, R.; Loconsole, R. A.; Løvhøiden, G.; Manzari, V.; Mazzoni, M. A.; Meddi, F.; Michalon Mentzer, M. E.; Michalon, A.; Morando, M.; Norman, P. I.; Palmeri, A.; Pappalardo, G. S.; Pastirčák, B.; Platt, R. J.; 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.; Thompson, M.; Turrisi, R.; Tveter, T. S.; Urbán, J.; Van De Ven, P.; Vyvre, P. Vande; Vascotto, A.; Vik, T.; Baillie, O. Villalobos; Vinogradov, L.; Virgili, T.; Votruba, M. F.; Vrláková, J.; Závada, P.. - In: JOURNAL OF PHYSICS. G, NUCLEAR AND PARTICLE PHYSICS. - ISSN 0954-3899. - STAMPA. - 32:4(2006), pp. 427-441. [10.1088/0954-3899/32/4/003]
Enhancement of hyperon production at central rapidity in 158 A GeV/c Pb-Pb collisions
BRUNO, Giuseppe Eugenio
;
2006-01-01
Abstract
Results are presented on hyperon and antihyperon production in Pb-Pb, pPb and pBe collisions at 158 GeV/c per nucleon. Lambda, Xi and Omega yields have been measured at central rapidity and medium transverse momentum as functions of the centrality of the collision. Comparing the yields in Pb-Pb to those in pBe interactions, strangeness enhancement is observed. The enhancement increases with the centrality and with the strangeness content of the hyperons, reaching a factor of about 20 for the Omega in the central Pb-Pb collisions.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
