ARGUS results on lepton-baryon charge correlation in B decays and search for bs transitions

  • A. I. Golutvin
Conference paper

Abstract

In 1987 the ARGUS collaboration discovered unexpectably large B d 0 B d 0 mixing [1] which is now confirmed by the CLEO collaboration [2]. Since that time different approaches have been analyzed to obtain new information on the mixing phenomenon. One of them is a study of lepton-baryon charge correlation in B meson decays. It is usually expected that in B decays stable baryons are either the decay products of the charmed baryon, or arise from hadronization processes involving the spectator quark to conserve baryon number. The sign of charmed baryon, as well as the sign of the primary lepton in semileptonic B decays, identifies whether the decaying meson was B or B. A charmed baryon and a high momentum primary lepton observed in the same ?(4S) → B B event must originate from the decay of different B mesons, because of energy conservation. Therefore there exists a strong charge correlation between the primary lepton and the baryon resulting from the charmed baryon decay.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    ARGUS collaboration, H. Albrecht et al., Phys. Lett. 192B (1987) 245ADSCrossRefGoogle Scholar
  2. [2]
    CLEO collaboration, A. Jawahery et al., Contributed paper 708 to this conferenceGoogle Scholar
  3. [3]
    CLEO collaboration, M. S. Alam et al., Phys. Rev. Lett. 59 (1987) 22ADSCrossRefGoogle Scholar
  4. [4]
    ARGUS collaboration, H. Albrecht et al., Contributed paper 808 to this conferenceGoogle Scholar
  5. [5]
    N. G. Deshpande et al., Phys. Rev. Lett. 59 (1987) 183ADSCrossRefGoogle Scholar
  6. [6]
    B. Grinstein et al., California Institute of Technology CALT-68-1451Google Scholar
  7. [7]
    W. S. Hou, A. Soni and H. Steger, Phys. Rev. Lett. 59 (1987) 1521ADSCrossRefGoogle Scholar
  8. [8]
    ARGUS collaboration, H Albrecht et al., Phys. Lett. 210B (1988) 258ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • A. I. Golutvin
    • 1
  1. 1.Institute of Theoretical and Experimental PhysicsMoscowUSSR

Personalised recommendations