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

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Zeitschrift für Physik C Particles and Fields

Abstract

The production ofD *(2010)+ andJ/ψ mesons and prompt leptons has been investigated ine + e − interactions at the Ψ(1S) 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 (1S)→D *(2010)±+X)<0.019 (forx p >0.2) and BRdir (ϒ(1S)→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(1S)→Y c +X)<0.034 (Y c denoting a charm-containing particle) is derived.

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Author notes

  1. S. Nowak & M. Walter

    Present address: DESY, Hamburg, Germany

  2. D. I. Britton, E. R. F. Hyatt, D. B. MacFarlane, P. M. Patel, P. R. B. Saull & K. Tzamariudaki

    Present address: McGill University, Montreal, Quebec, Canada

  3. C. E. K. Charlesworth, P. Krieger, J. D. Prentice, S. C. Seidel, R. G. Van de Water & T. -S. Yoon

    Present address: University of Toronto, Toronto, Ontario, Canada

  4. K. W. Edwards & H. Kapitza

    Present address: Carleton University, Ottawa, Ontario, Canada

Authors and Affiliations

  1. DESY, Hamburg, Germany

    H. Albrecht, H. Ehrlichmann, T. Hamacher, A. Krüger, A. Nau, A. Nippe, M. Reidenbach, M. Schäfer, H. Schröder, H. D. Schulz & R. Wurth

  2. Institut für Physik, Universität Dortmund, Germany

    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

  3. Physikalisches Institut, Universität Erlangen-Nürnberg, Germany

    M. Paulini, K. Reim & H. Wegener

  4. II. Institut für Experimentalphysik, Universität Hamburg, Germany

    R. Mundt, T. Oest & W. Schmidt-Parzefall

  5. Institut für Hochenergiephysik, Universität Heidelberg, Germany

    W. Funk, J. Stiewe & S. Werner

  6. Max-Planck-Institut für Kernphysik, Heidelberg, Germany

    K. Ehret, A. Hölscher, W. Hofmann, A. Hüpper, S. Khan, K. T. Knöpfle & J. Spengler

  7. Institute of Particle Physics, Canada

    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

  8. Institut für Experimentelle Kernphysik, Universität Karlsruhe, Germany

    D. Reßing, M. Schmidtler, M. Schneider, K. R. Schubert, K. Strahl, R. Waldi & S. Weseler

  9. Institut J. Stefan and Oddelek za fiziko, Univerza v Ljubljani, Ljubljana, Slovenia

    G. Kernel, P. Križan, E. Križnič, T. Podobnik & T. Živko

  10. Institute of Physics, University of Lund, Sweden

    H. I. Cronström & L. Jönsson

  11. Institute of Theoretical and Experimental Physics, Moscow, Russia

    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

Authors
  1. H. Albrecht
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  2. H. Ehrlichmann
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  3. T. Hamacher
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  4. A. Krüger
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  5. A. Nau
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  6. A. Nippe
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  7. S. Nowak
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  8. M. Reidenbach
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  9. M. Schäfer
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  10. H. Schröder
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  11. H. D. Schulz
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  12. M. Walter
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  13. R. Wurth
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  14. R. D. Appuhn
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  15. C. Hast
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  16. G. Herrera
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  17. H. Kolanoski
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  18. A. Lange
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  19. A. Lindner
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  20. R. Mankel
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  21. M. Schieber
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  22. T. Siegmund
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  23. B. Spaan
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  24. H. Thurn
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  25. D. Töpfer
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  26. A. Walther
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  27. D. Wegener
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  28. M. Paulini
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  29. K. Reim
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  30. H. Wegener
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  31. R. Mundt
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  32. T. Oest
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  33. W. Schmidt-Parzefall
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  34. W. Funk
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  35. J. Stiewe
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  36. S. Werner
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  37. K. Ehret
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  38. A. Hölscher
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  39. W. Hofmann
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  40. A. Hüpper
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  41. S. Khan
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  42. K. T. Knöpfle
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  43. J. Spengler
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  44. D. I. Britton
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  45. C. E. K. Charlesworth
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  46. K. W. Edwards
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  47. E. R. F. Hyatt
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  48. H. Kapitza
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  49. P. Krieger
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  50. D. B. MacFarlane
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  51. P. M. Patel
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  52. J. D. Prentice
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  53. P. R. B. Saull
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  54. S. C. Seidel
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  55. K. Tzamariudaki
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  56. R. G. Van de Water
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  57. T. -S. Yoon
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  58. D. Reßing
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  59. M. Schmidtler
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  60. M. Schneider
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  63. R. Waldi
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  65. G. Kernel
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  66. P. Križan
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  67. E. Križnič
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  68. T. Podobnik
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  70. H. I. Cronström
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  72. V. Balagura
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  73. I. Belyaev
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  78. G. Kostina
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  79. V. Lubimov
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  80. P. Murat
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  81. P. Pakhlov
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  82. F. Ratnikov
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  83. S. Semenov
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  84. V. Shibaev
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  85. V. Soloshenko
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  86. I. Tichomirov
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  87. Yu. Zaitsev
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Consortia

ARGUS Collaboration

Additional information

Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054DO51P

Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054ER 12P

Supported by the German Bundesministerium für Forschung und Technologie, under contract number 055HD21P

Supported in part by the Walter C. Sumner Foundation

Supported by the Natural Sciences and Engineering Research Council, Canada

Supported by the German Bundesministerium für Forschung und Technologie, under contract number 054KA 17P

Supported by the Department of Science and Technology of the Republic of Slovenia and the Internationales Büro KfA, Jülich

Supported by the Swedish Research Council

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ARGUS Collaboration., Albrecht, H., Ehrlichmann, H. et al. Search for charm production in direct decays of the ϒ(1S) resonance. Z. Phys. C - Particles and Fields 55, 25–31 (1992). https://doi.org/10.1007/BF01558286

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  • DOI: https://doi.org/10.1007/BF01558286

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