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Charmonia and Drell-Yan production in proton-nucleus collisions at the CERN SPS

  • B. Alessandro
  • , C. Alexa
  • , R. Arnaldi
  • , M. Atayan
  • , C. Baglin
  • , S. Beolè
  • , V. Boldea
  • , P. Bordalo
  • , S. R. Borenstein
  • , G. Borges
  • , A. Bussière
  • , L. Capelli
  • , C. Castanier
  • , J. Castor
  • , B. Chaurand
  • , B. Cheynis
  • , E. Chiavassa
  • , C. Cicalò
  • , T. Claudino
  • , M. P. Comets
  • N. Constans, S. Constantinescu, P. Cortese, J. Cruz, A. De Falco, N. De Marco, G. Dellacasa, A. Devaux, S. Dita, O. Drapier, L. Ducroux, B. Espagnon, J. Fargeix, P. Force, M. Gallio, Y. K. Gavrilov, C. Gerschel, P. Giubellino, M. B. Golubeva, M. Gonin, A. A. Grigorian, S. Grigorian, J. Y. Grossiord, F. F. Guber, A. Guichard, H. Gulkanyan, R. Hakobyan, M. Idzik, D. Jouan, T. L. Karavitcheva, L. Kluberg, A. B. Kurepin, Y. Le Bornec, C. Lourenço, P. Macciotta, M. Mac Cormick, A. Marzari-Chiesa, M. Masera, A. Masoni, M. Monteno, A. Musso, P. Petiau, A. Piccotti, J. R. Pizzi, W. Prado da Silva, F. Prino, G. Puddu, C. Quintans, L. Ramello, S. Ramos, P. Rato Mendes, L. Riccati, A. Romana, H. Santos, P. Saturnini, E. Scalas, E. Scomparin, S. Serci, R. Shahoyan, F. Sigaudo, M. Sitta, P. Sonderegger, X. Tarrago, N. S. Topilskaya, G. L. Usai, E. Vercellin, L. Villatte, N. Willis
  • University of Turin
  • IFA
  • Yerevan Physics Institute
  • Laboratoire de Physique des Particules
  • LIP - Lisboa
  • Instituto Superior Técnico
  • Université Blaise Pascal
  • Centre national de la recherche scientifique
  • Universitá di Cagliari
  • Université Paris-Saclay
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • European Organization for Nuclear Research
  • Agh University of Science and Technology Faculty of Computer Science
  • Rua São Francisco de Xavier

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)

Abstract

YerPhI, Yerevan, Armenia Charmonium production in p-A collisions is a unique tool for the study of the interaction of bound cc̄ states in nuclear matter. It can provide details on the basic features of the resonance formation mechanism and, in particular, on its non-perturbative aspects. In this Letter, we present an experimental study of charmonia and Drell-Yan production in proton-nucleus collisions at 450 GeV/c. The results are analyzed in the framework of the Glauber model and lead to the values of the nuclear absorption cross-section apbS σabs pA for J/ψ and ψ'. Then, we compare the J/ψ absorption in proton-nucleus and sulphur-uranium interactions, using NA38 data. We obtain that, for the J/ψ, σabs pA and σabs SU are compatible, showing that no sizeable additional suppression mechanism is present in S-U collisions, and confirming that the anomalous J/Σ suppression only sets in for Pb-Pb interactions.

Original languageEnglish
Pages (from-to)167-178
Number of pages12
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume553
Issue number3-4
DOIs
Publication statusPublished - 6 Feb 2003

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