Zeitschrift für Physik C Particles and Fields

, Volume 47, Issue 3, pp 333–342 | Cite as

Heavy quark charge asymmetries with the CELLO detector

  • CELLO Collaboration
  • H. J. Behrend
  • L. Criegee
  • J. H. Field
  • G. Franke
  • H. Jung
  • J. Meyer
  • O. Podobrin
  • V. Schröder
  • G. G. Winter
  • P. J. Bussey
  • A. J. Campbell
  • D. Hendry
  • S. Lumsdon
  • I. O. Skillicorn
  • J. Ahme
  • V. Blobel
  • W. Brehm
  • M. Feindt
  • H. Fenner
  • J. Harjes
  • J. Köhne
  • J. H. Peters
  • H. Spitzer
  • 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
  • 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
  • M. Davier
  • J. F. Grivaz
  • J. Haissinski
  • V. Journé
  • D. W. Kim
  • F. Le Diberder
  • J. J. Veillet
  • K. Blohm
  • R. George
  • M. Goldberg
  • O. Hamon
  • F. Kapusta
  • L. Poggioli
  • M. Rivoal
  • G. d'Agostini
  • F. Ferrarotto
  • M. Iacovacci
  • G. Shooshtari
  • B. Stella
  • G. Cozzika
  • Y. Ducros
  • G. Alexander
  • A. Beck
  • G. Bella
  • J. Grunhaus
  • A. Klatchko
  • A. Levy
  • C. Milsténe
Article
Received:

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.

Keywords

Field Theory Elementary Particle Quantum Field Theory Back Ground Heavy Quark 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Springer-Verlag 1990

Authors and Affiliations

  • CELLO Collaboration
  • H. J. Behrend
    • 1
  • L. Criegee
    • 1
  • J. H. Field
    • 1
  • G. Franke
    • 1
  • H. Jung
    • 1
  • J. Meyer
    • 1
  • O. Podobrin
    • 1
  • V. Schröder
    • 1
  • G. G. Winter
    • 1
  • P. J. Bussey
    • 2
  • A. J. Campbell
    • 2
  • D. Hendry
    • 2
  • S. Lumsdon
    • 2
  • I. O. Skillicorn
    • 2
  • J. Ahme
    • 3
  • V. Blobel
    • 3
  • W. Brehm
    • 3
  • M. Feindt
    • 3
  • H. Fenner
    • 3
  • J. Harjes
    • 3
  • J. Köhne
    • 3
  • J. H. Peters
    • 3
  • H. Spitzer
    • 3
  • W. D. Apel
    • 4
  • J. Engler
    • 4
  • G. Flügge
    • 4
  • D. C. Fries
    • 4
  • J. Fuster
    • 4
  • P. Gabriel
    • 4
  • K. Gamerdinger
    • 4
  • P. Grosse-Wiesmann
    • 4
  • M. Hahn
    • 4
  • U. Hädinger
    • 4
  • J. Hansmeyer
    • 4
  • H. Küster
    • 4
  • H. Müller
    • 4
  • K. H. Ranitzsch
    • 4
  • H. Schneider
    • 4
  • R. Seufert
    • 4
  • W. de Boer
    • 5
  • G. Buschhorn
    • 5
  • G. Grindhammer
    • 5
  • B. Gunderson
    • 5
  • C. Kiesling
    • 5
  • R. Kotthaus
    • 5
  • H. Kroha
    • 5
  • D. Lüers
    • 5
  • H. Oberlack
    • 5
  • P. Schacht
    • 5
  • S. Scholz
    • 5
  • W. Wiedenmann
    • 5
  • M. Davier
    • 6
  • J. F. Grivaz
    • 6
  • J. Haissinski
    • 6
  • V. Journé
    • 6
  • D. W. Kim
    • 6
  • F. Le Diberder
    • 6
  • J. J. Veillet
    • 6
  • K. Blohm
    • 7
  • R. George
    • 7
  • M. Goldberg
    • 7
  • O. Hamon
    • 7
  • F. Kapusta
    • 7
  • L. Poggioli
    • 7
  • M. Rivoal
    • 7
  • G. d'Agostini
    • 8
  • F. Ferrarotto
    • 8
  • M. Iacovacci
    • 8
  • G. Shooshtari
    • 8
  • B. Stella
    • 8
  • G. Cozzika
    • 9
  • Y. Ducros
    • 9
  • G. Alexander
    • 10
  • A. Beck
    • 10
  • G. Bella
    • 10
  • J. Grunhaus
    • 10
  • A. Klatchko
    • 10
  • A. Levy
    • 10
  • C. Milsténe
    • 10
  1. 1.Deutsches Elektronen-SynchrotronDESYHamburgFederal Republic of Germany
  2. 2.University of GlasgowGlasgowUK
  3. 3.II. Institut für Experimentalphysik, UniversitätHamburgFederal Republic of Germany
  4. 4.Kernforschungszentrum Karlsruhe und Universität KarlsruheFederal Republic of Germany
  5. 5.Max-Planck-Institut für Physik und AstrophysikMünchenFederal Republic of Germany
  6. 6.Laboratoire de l'Accélérateur LinéaireOrsayFrance
  7. 7.Laboratoire de Physique Nucléaire et Hautes EnergiesUniversité de ParisFrance
  8. 8.University of Rome and INFNItaly
  9. 9.Centre d'Études NucléairesSaclayFrance
  10. 10.Tel Aviv UniversityIsrael

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