Low mass dimuon production in indium-indium collisions at 158 A GeV

The NA60 experiment studies open charm and prompt dimuon production in proton-nucleus and nucleus-nucleus collisions at the CERN SPS. During 2003 the experiment collected data in indium-indium collisions at 158 GeV per nucleon. Almost 240 million dimuon events were recorded. New results on J/psi sup...

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Detalles Bibliográficos
Autores principales: Usai, G, Arnaldi, R, Averbeck, R, Banicz, K, Castor, J, Chaurand, B, Cicalò, C, Colla, A, Cortese, P, Damjanovic, S, David, A, De Falco, A, Devaux, A, Drees, A, Ducroux, L, Enyo, H, Ferretti, A, Floris, M, Force, P, Guettet, N, Guichard, A, Gulkanian, H R, Heuser, J, Keil, M, Kluberg, L, Lozano, J, Lourenço, C, Manso, F, Masoni, A, Martins, P, Neves, A, Ohnishi, H, Oppedisano, C, Parracho, P, Pillot, P, Puddu, G, Radermacher, E, Ramalhete, P, Rosinsky, P, Scomparin, E, Seixas, J, Serci, S, Shahoyan, R, Sonderegger, P, Specht, H J, Tieulent, R, Veenhof, R, Wöhri, H K
Lenguaje:eng
Publicado: 2005
Materias:
Nuclear Physics
Acceso en línea:https://dx.doi.org/10.1140/epjc/s2005-02209-x
http://cds.cern.ch/record/1004702
Descripción
Sumario:The NA60 experiment studies open charm and prompt dimuon production in proton-nucleus and nucleus-nucleus collisions at the CERN SPS. During 2003 the experiment collected data in indium-indium collisions at 158 GeV per nucleon. Almost 240 million dimuon events were recorded. New results on J/psi suppression, open-charm production and low mass dimuons should help clarify some interesting questions left open by previous experiments. After a brief detector description, this paper focuses on the analysis of the low mass dimuons. Preliminary results are presented on the phi/omega production cross section ratios and on the phi transverse momentum distributions, both as a function of collision centrality.

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