Enhancement of central Λ, Ξ and [formula omitted] yields in Pb-Pb collisions at 158 A GeV/ c

• Published in: Physics letters. B 1998-08, Vol.433 (1), p.209-216
• Main Authors: Andersen, E., Antinori, F., Armenise, N., Bán, J., Barberis, D., Beker, H., Beusch, W., Bloodworth, I.J., Böhm, J., Caliandro, R., Campbell, M., Cantatore, E., Carrer, N., Catanesi, M.G., Chesi, E., Dameri, M., Darbo, G., Diaczek, A., Di Bari, D., Di Liberto, S., Earl, B.C., Elia, D., Evans, D., Fanebust, K., Fini, R.A., Fontaine, J.C., Ftáčnik, J., Ghidini, B., Grella, G., Guida, M., Heijne, E.H.M., Helstrup, H., Holme, A.K., Huss, D., Jacholkowski, A., Jones, G.T., Jovanovic, P., Jusko, A., Kachanov, V.A., Kachelhoffer, T., Kinson, J.B., Kirk, A., Klempt, W., Knudsen, B.T.H., Knudson, K., Králik, I., Lassalle, J.C., Lenti, V., Lietava, R., Loconsole, R.A., Løvhøiden, G., Lupták, M., Mack, V., Manzari, V., Martinengo, P., Mazzoni, M.A., Meddi, F., Michalon, A., Michalon-Mentzer, M.E., Middelkamp, P., Morando, M., Muciaccia, M.T., Nappi, E., Navach, F., Norman, P.I., Osculati, B., Pastirčák, B., Pellegrini, F., Pı́ška, K., Posa, F., Quercigh, E., Ricci, R.A., Romano, G., Rosa, G., Rossi, L., Rotscheidt, H., Šafařı́k, K., Saladino, S., Salvo, C., Šándor, L., Scognetti, T., Segato, G., Sené, M., Simone, S., Singovski, A., Snoeys, W., Staroba, P., Szafran, S., Thompson, M., Thorsteinsen, T.F., Tomasicchio, G., Torrieri, G.D., Tveter, T.S., Urbán, J., Vassiliadis, G., Venables, M., Villalobos Baillie, O., Virgili, T., Volte, A., Závada, P.
• Format: Article
• Language: English
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/S0370-2693(98)00689-3

Λ, Ξ and Ω yields and transverse mass spectra have been measured in Pb-Pb and p-Pb collisions at 158 A GeV/ c. The yields in Pb-Pb interactions are presented as a function of the collision centrality and compared with those obtained from p-Pb collisions. Strangeness enhancement is observed which increases with centrality and with the strangeness content of the hyperon.