Study of the transverse mass spectra of strange particles in Pb-Pb collisions at 158 A GeV/c

The NA57 experiment has collected high statistics, high purity samples of \PKzS and \PgL, $\Xi$ and $\Omega$ hyperons produced in Pb-Pb collisions at 158 $A$ GeV/$c$. In this paper we present a study of the transverse mass spectra of these particles for a sample of events corresponding to the most c...

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Detalles Bibliográficos
Autores principales: Antinori, F., Bacon, P., Badala, A., Barbera, R., Belogianni, A., Bhasin, A., Bloodworth, I.J., Bombara, M., Bruno, E., Bull, S.A., Caliandro, R., Campbell, M., Carena, Wisla, Carrer, N., Clarke, R.F., Dainese, A., de Haas, A.P., de Rijke, P.C., Di Bari, D., Di Liberto, S., Divia, 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., Kralik, I., Kravcakova, A., Kuijer, P., Lenti, V., Lietava, R., Lovhoiden, G., Manzari, V., Martinska, G., Mazzoni, M.A., Meddi, F., Michalon, A., Morando, M., Nappi, E., Navach, F., Norman, P.I., Palmeri, A., Pappalardo, G.S., Pastircak, B., Pisut, Jan, Pisutova, N., Platt, R.J., Posa, F., Quercigh, E., Riggi, F., Rohrich, D., Romano, G., Safark, K., Sandor, L., Schillings, E., Segato, G., Sene, M., Sene, R., Snoeys, W., Soramel, F., Spyropoulou-Stassinaki, M., Staroba, P., Toulina, T.A., Turrisi, R., Tveter, T.S., Urban, J., Valiev, F.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., Vrlakova, J., Zavada, P.
Lenguaje:eng
Publicado: 2004
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1088/0954-3899/30/6/011
http://cds.cern.ch/record/724296
Descripción
Sumario:The NA57 experiment has collected high statistics, high purity samples of \PKzS and \PgL, $\Xi$ and $\Omega$ hyperons produced in Pb-Pb collisions at 158 $A$ GeV/$c$. In this paper we present a study of the transverse mass spectra of these particles for a sample of events corresponding to the most central 53% of the inelastic Pb-Pb cross-section. We analyse the transverse mass distributions in the framework of the blast-wave model for the full sample and, for the first time at the SPS, as a function of the event centrality.

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