Expansion dynamics of Pb-Pb collisions at 40 A GeV/c viewed by negatively charged hadrons

In this paper we present results on transverse mass spectra and Hanbury-Brown and Twiss correlation functions of negatively charged hadrons, which are expected to be mostly negative pions, measured in Pb-Pb collisions at 40 A GeV/c beam momentum. Based on these data, the collision dynamics and the s...

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Detalles Bibliográficos
Autores principales: Antinori, F., Bacon, P., Badalà, A., Barbera, R., Belogianni, 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., Bari, D.Di, Liberto, S.Di, 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., 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., Løvhøiden, G., Manzari, V., Mazzoni, M.A., Meddi, F., 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., Romita, R., Šafařík, K., Šándor, L., Schillings, E., Segato, G., Sené, M., Sené, R., Snoeys, W., Soramel, F., Spyropoulou-Stassinaki, M., Staroba, P., Turrisi, R., Tveter, T.S., Urbán, J., Ven, P. van de, Vyvre, P.Vande, Vascotto, A., Vik, T., Baillie, O.Villalobos, Vinogradov, L., Virgili, T., Votruba, M.F., Vrláková, J., Závada, P.
Lenguaje:eng
Publicado: 2007
Materias:
Nuclear Physics - Experiment
Acceso en línea:https://dx.doi.org/10.1088/0954-3899/34/3/001
http://cds.cern.ch/record/1096196
Descripción
Sumario:In this paper we present results on transverse mass spectra and Hanbury-Brown and Twiss correlation functions of negatively charged hadrons, which are expected to be mostly negative pions, measured in Pb-Pb collisions at 40 A GeV/c beam momentum. Based on these data, the collision dynamics and the space-time extent of the system at the thermal freeze-out are studied over a centrality range corresponding to the most central 53% of the Pb--Pb inelastic cross section. Comparisons with freeze-out conditions of strange particles and HBT results from other experiments are discussed.

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