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Heavy quark charge asymmetries with the CELLO detector

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Zeitschrift für Physik C Particles and Fields

Abstract

The production ofb andc quarks ine + e − annihilation has been studied with the CELLO detector in the range from 35 GeV up to the highest PETRA energies. The heavy quarks have been tagged by their semileptonic decays. The charge asymmetries forb quarks at 35 and 43 GeV have been found to beA b=−(22.2±8.1)% andA b=−(49.1±16.5)%, respectively, using a method incorporating jet variables and their correlations for the separation of the heavy quarks from the back ground of the lighter quarks. Forc quarks we obtainA c=−(12.9±8.8)% andA c=+(7.7±14.0)%, respectively. The axial vector coupling constants of the heavy quarksc andb are found to bea c =+(0.29±0.46) anda b =−(1.15±0.41) taking\(B^0 \overline {B^0 } \) mixing into account. The results are in agreement with the expectations from the standard model.

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Author information

Author notes

  1. H. Küster

    Present address: Deutsches Elektronen-Synchrotron, DESY, Hamburg, Federal Republic of Germany

  2. J. H. Field

    Present address: Université de Genève, Switzerland

  3. H. Jung & G. Flügge

    Present address: RWTH, Aachen, FRG

  4. J. Fuster

    Present address: Instituto de Física Corpuscular, Universidad de Valencia, Spain

  5. K. Gamerdinger

    Present address: MPI München, München, Germany

  6. P. Grosse-Wiesmann & G. Grindhammer

    Present address: SLAC, Stanford, USA

  7. C. Kiesling

    Present address: Heisenberg-Stipendiat der Deutschen Forschungsgemeinschaft, Germany

Authors and Affiliations

  1. Deutsches Elektronen-Synchrotron, DESY, Hamburg, Federal Republic of Germany

    H. J. Behrend, L. Criegee, J. H. Field, G. Franke, H. Jung, J. Meyer, O. Podobrin, V. Schröder & G. G. Winter

  2. University of Glasgow, Glasgow, UK

    P. J. Bussey, A. J. Campbell, D. Hendry, S. Lumsdon & I. O. Skillicorn

  3. II. Institut für Experimentalphysik, Universität, Hamburg, Federal Republic of Germany

    J. Ahme, V. Blobel, W. Brehm, M. Feindt, H. Fenner, J. Harjes, J. Köhne, J. H. Peters & H. Spitzer

  4. Kernforschungszentrum Karlsruhe und Universität Karlsruhe, Federal Republic of Germany

    W. D. Apel, J. Engler, G. Flügge, D. C. Fries, J. Fuster, P. Gabriel, K. Gamerdinger, P. Grosse-Wiesmann, M. Hahn, U. Hädinger, J. Hansmeyer, H. Küster, H. Müller, K. H. Ranitzsch, H. Schneider & R. Seufert

  5. Max-Planck-Institut für Physik und Astrophysik, München, Federal Republic of Germany

    W. de Boer, G. Buschhorn, G. Grindhammer, B. Gunderson, C. Kiesling, R. Kotthaus, H. Kroha, D. Lüers, H. Oberlack, P. Schacht, S. Scholz & W. Wiedenmann

  6. Laboratoire de l'Accélérateur Linéaire, Orsay, France

    M. Davier, J. F. Grivaz, J. Haissinski, V. Journé, D. W. Kim, F. Le Diberder & J. J. Veillet

  7. Laboratoire de Physique Nucléaire et Hautes Energies, Université de Paris, France

    K. Blohm, R. George, M. Goldberg, O. Hamon, F. Kapusta, L. Poggioli & M. Rivoal

  8. University of Rome and INFN, Italy

    G. d'Agostini, F. Ferrarotto, M. Iacovacci, G. Shooshtari & B. Stella

  9. Centre d'Études Nucléaires, Saclay, France

    G. Cozzika & Y. Ducros

  10. Tel Aviv University, Israel

    G. Alexander, A. Beck, G. Bella, J. Grunhaus, A. Klatchko, A. Levy & C. Milsténe

Authors
  1. H. J. Behrend
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  2. L. Criegee
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  3. J. H. Field
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  4. G. Franke
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  5. H. Jung
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  6. J. Meyer
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  7. O. Podobrin
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  8. V. Schröder
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  9. G. G. Winter
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  10. P. J. Bussey
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  11. A. J. Campbell
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  12. D. Hendry
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  13. S. Lumsdon
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  14. I. O. Skillicorn
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  15. J. Ahme
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  16. V. Blobel
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  17. W. Brehm
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  18. M. Feindt
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  19. H. Fenner
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  20. J. Harjes
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  21. J. Köhne
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  22. J. H. Peters
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  23. H. Spitzer
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  24. W. D. Apel
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  25. J. Engler
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  26. G. Flügge
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  27. D. C. Fries
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  28. J. Fuster
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  29. P. Gabriel
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  30. K. Gamerdinger
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  31. P. Grosse-Wiesmann
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  32. M. Hahn
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  33. U. Hädinger
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  34. J. Hansmeyer
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  35. H. Küster
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  36. H. Müller
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  37. K. H. Ranitzsch
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  38. H. Schneider
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  39. R. Seufert
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  40. W. de Boer
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  41. G. Buschhorn
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  42. G. Grindhammer
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  43. B. Gunderson
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  44. C. Kiesling
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  45. R. Kotthaus
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  46. H. Kroha
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  52. M. Davier
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  53. J. F. Grivaz
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  54. J. Haissinski
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  55. V. Journé
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  56. D. W. Kim
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  59. K. Blohm
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  60. R. George
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  61. M. Goldberg
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  62. O. Hamon
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  63. F. Kapusta
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  70. B. Stella
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  71. G. Cozzika
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  72. Y. Ducros
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  73. G. Alexander
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  74. A. Beck
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  75. G. Bella
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  76. J. Grunhaus
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  77. A. Klatchko
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  78. A. Levy
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  79. C. Milsténe
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CELLO Collaboration., Behrend, H.J., Criegee, L. et al. Heavy quark charge asymmetries with the CELLO detector. Z. Phys. C - Particles and Fields 47, 333–342 (1990). https://doi.org/10.1007/BF01565856

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  • DOI: https://doi.org/10.1007/BF01565856

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