J/ψ production in indium-indium collisions at SPS energies

P. Pillot, R. Arnaldi, R. Averbeck, K. Banicz, J. Castor, B. Chaurand, C. Cicalo, A. Colla, P. Cortese, S. Damjanovic, A. David, A. De Falco, A. Devaux, A. Drees, L. Ducroux, H. En'Yo, A. Ferretti, M. Floris, P. Force, N. GuettetA. Guichard, H. Gulkanian, J. Heuser, M. Keil, L. Kluberg, J. Lozano, C. Lourenço, F. Manso, A. Masoni, P. Martins, A. Neves, H. Ohnishi, C. Oppedisano, P. Parracho, G. Puddu, E. Radermacher, P. Ramalhete, P. Rosinsky, E. Scomparin, J. Seixas, S. Serci, R. Shahoyan, P. Sonderegger, H. J. Specht, R. Tieulent, G. Usai, R. Veenhof, H. K. Wöhri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The NA60 experiment collected data on dimuon production in indium-indium collisions at 158 GeV/c per incident nucleon, in year 2003, to contribute to the clarification of several questions raised by previous experiments studying high-energy heavy-ion physics at the CERN SPS in search of the quark gluon plasma. Among these previous results stands the observation, by NA50, that the production yield of J/ψ mesons is suppressed in central Pb-Pb collisions beyond the normal nuclear absorption defined by proton-nucleus data. By comparing the centrality dependence of the suppression pattern between different colliding systems, S-U, Pb-Pb and In-In, we should be able to identify the corresponding scaling variable, and the physics mechanism driving the suppression. In this paper, we will present the ratio of J/ψ and Drell-Yan production cross-sections in indium-indium collisions, in three centrality bins, and how these values compare to previous measurements. We will also present a study of the transverse momentum distributions of the J/ψ mesons, in seven centrality bins.

Original languageEnglish
Title of host publicationQCD@WORK 2005
Subtitle of host publicationInternational Workshop on Quantum Chromodynamics: Theory and Experiment
Pages279-285
Number of pages7
DOIs
Publication statusPublished - 2006 Jan 12
Externally publishedYes
EventQCD@WORK 2005: International Workshop on Quantum Chromodynamics: Theory and Experiment - Conversano, Bari, Italy
Duration: 2005 Jun 162005 Jun 20

Publication series

NameAIP Conference Proceedings
Volume806
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

OtherQCD@WORK 2005: International Workshop on Quantum Chromodynamics: Theory and Experiment
CountryItaly
CityConversano, Bari
Period05/6/1605/6/20

Keywords

  • Dimuon
  • J/psi
  • Quark-gluon plasma
  • Resonance
  • Transverse momentum

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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