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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. Guettet
  • A. 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
  • Universite Claude Bernard Lyon 1
  • University of Turin
  • Stony Brook University
  • CERN
  • Heidelberg University 
  • Université Blaise Pascal
  • Laboratoire Leprince-Ringuet
  • University of Cagliari
  • University of Lisbon
  • RIKEN
  • YerPhl

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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
StatePublished - Jan 12 2006
EventQCD@WORK 2005: International Workshop on Quantum Chromodynamics: Theory and Experiment - Conversano, Bari, Italy
Duration: Jun 16 2005Jun 20 2005

Publication series

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

Conference

ConferenceQCD@WORK 2005: International Workshop on Quantum Chromodynamics: Theory and Experiment
Country/TerritoryItaly
CityConversano, Bari
Period06/16/0506/20/05

Keywords

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

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