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Search for charm production in direct decays of the Υ{hooked}(1 S) resonance

  • H. Albrecht
  • , H. Ehrlichmann
  • , T. Hamacher
  • , A. Krüger
  • , A. Nau
  • , A. Nippe
  • , S. Nowak
  • , M. Reidenbach
  • , M. Schäfer
  • , H. Schröder
  • , H. D. Schulz
  • , M. Walter
  • , R. Wurth
  • , R. D. Appuhn
  • , C. Hast
  • , G. Herrera
  • , H. Kolanoski
  • , A. Lange
  • , A. Lindner
  • , R. Mankel
  • M. Schieber, T. Siegmund, B. Spaan, H. Thurn, D. Töpfer, A. Walther, D. Wegener, M. Paulini, K. Reim, H. Wegener, R. Mundt, T. Oest, W. Schmidt-Parzefall, W. Funk, J. Stiewe, S. Werner, K. Ehret, A. Hölscher, W. Hofmann, A. Hüpper, S. Khan, K. T. Knöpfle, J. Spengler, D. I. Britton, C. E.K. Charlesworth, K. W. Edwards, E. R.F. Hyatt, H. Kapitza, P. Krieger, D. B. MacFarlane, P. M. Patel, J. D. Prentice, P. R.B. Saull, S. C. Seidel, K. Tzamariudaki, R. G. Van de Water, T. S. Yoon, D. Reßing, M. Schmidtler, M. Schneider, K. R. Schubert, K. Strahl, R. Waldi, S. Weseler, G. Kernel, P. Križan, E. Križnič, T. Podobnik, T. Živko, H. I. Cronström, L. Jönsson, V. Balagura, I. Belyaev, M. Danilov, A. Droutskoy, A. Golutvin, I. Gorelov, G. Kostina, V. Lubimov, P. Murat, P. Pakhlov, F. Ratnikov, S. Semenov, V. Shibaev, V. Soloshenko, I. Tichomirov, Yu Zaitsev
  • c/o DESY
  • University of Dortmund
  • Friedrich-Alexander University (FAU) Erlangen-Nürnberg and Universitätsklinikum Erlangen
  • Universität Hamburg
  • University of Heidelberg
  • Max-Planck-Institut für Kernphysik
  • Institute of Particle Physics
  • Universität Karlsruhe/Forschungszentrum Karlsruhe
  • University of Ljubljana
  • Lund University
  • Institute for Theoretical and Experimental Physics

Research output: Contribution to journalArticlepeer-review

25 Citations (Scopus)

Abstract

The production of D*(2010)+ and J/ψ mesons and prompt leptons has been investigated in e+e- interactions at the Ψ(1 S) resonance energy. The data were collected at the storage ring DORIS II at DESY with the ARGUS detector. We obtain upper limits of BRdir (Υ{hooked} (1 S)→D*(2010)±+X)<0.019 (for xp>0.2) and BRdir (Υ{hooked}(1 S)→J/ψ+X)<0.68×10-3, both at the 90% confidence level. From the prompt lepton analysis, a model dependent limit of BRdir (Υ{hooked}(1 S)→Yc+X)<0.034 (Yc denoting a charm-containing particle) is derived.

Original languageEnglish
Pages (from-to)25-31
Number of pages7
JournalZeitschrift fur Physik C-Particles and Fields
Volume55
Issue number1
DOIs
Publication statusPublished - 1 Mar 1992
Externally publishedYes

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