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Determination of the total cc̄ production cross section in 340 GeV/c Σ--nucleus interactions

  • M. I. Adamovich
  • , Yu A. Alexandrov
  • , D. Barberis
  • , M. Beck
  • , C. Bérat
  • , W. Beusch
  • , M. Boss
  • , S. Brons
  • , W. Brückner
  • , M. Buénerd
  • , C. Busch
  • , C. Büscher
  • , F. Charignon
  • , J. Chauvin
  • , E. A. Chudakov
  • , U. Dersch
  • , F. Dropmann
  • , J. Engelfried
  • , F. Faller
  • , A. Fournier
  • S. G. Gerassimov, M. Godbersen, P. Grafström, Th Haller, M. Heidrich, E. Hubbard, R. B. Hurst, K. Königsmann, I. Konorov, N. Keller, K. Martens, Ph Martin, S. Masciocchi, R. Michaels, U. Müller, H. Neeb, D. Newbold, C. Newsom, S. Paul, J. Pochodzalla, I. Potashnikova, B. Povh, R. D. Ransome, Z. Ren, M. Rey-Campagnolle, G. Rosner, L. Rossi, H. Rudolph, C. Scheel, L. Schmitt, H. W. Siebert, A. Simon, V. J. Smith, O. Thilmann, A. Trombini, E. Vesin, B. Volkemer, K. Vorwalter, Th Walcher, G. Wälder, R. Werding, E. Wittmann, M. V. Zavertyaev

Research output: Contribution to journalArticlepeer-review

7 Scopus citations

Abstract

The production of charmed particles by 340 GeV/c momentum Σ- was studied in the hyperon beam experiment WA89 at the CERN-SPS, using the Ω-spectrometer. In two data-taking periods in 1993 and 1994 an integrated luminosity of 1600 μb-1 on copper and carbon targets was recorded. From the reconstruction of 930 ± 90 charm particle decays in 10 decay channels production cross sections for D, D̄, Ds- and Λc+ were determined in the region xF > 0. Assuming an A1 dependence of the cross section on the nucleon number, we calculate a total cc̄ production cross section of σcc̄(xF > 0) = 5.3 ± 0.4 (stat) ± 1.0 (syst) + 1.0 (Ξc) μb per nucleon. The last term is an upper limit on the unknown contribution from charmed-strange baryon production.

Original languageEnglish
Pages (from-to)247-254
Number of pages8
JournalEuropean Physical Journal C
Volume13
Issue number3
DOIs
StatePublished - 2000

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