Zeitschrift für Physik C Particles and Fields

, Volume 34, Issue 1, pp 103–115

Exclusive non-leptonic decays ofD-,Ds- andB-mesons

  • M. Bauer
  • B. Stech
  • M. Wirbel
Article

DOI: 10.1007/BF01561122

Cite this article as:
Bauer, M., Stech, B. & Wirbel, M. Z. Phys. C - Particles and Fields (1987) 34: 103. doi:10.1007/BF01561122

Abstract

Recent experimental results onD-,Ds- andB-decays are interpreted on the basis of the valence quark model. For nonleptonic decays generally good results are obtained using factorization with little direct annihilation. Final state interaction causes corrections, however: small bare amplitudes can be fed by stronger amplitudes through channel mixing. This effect can simulate or enhance weak annihilation processes in particular if high lying resonances contribute. A comparison of\(D^0 \to \bar K^0 \phi \) withDs→ϱπ decays will clarify this issue. The effective QCD coefficients obtained in the analysis are discussed and used to estimate the contribution of two-body decays to the total widths. The result reflects already the lifetime differences betweenD0 andD+ mesons. Predictions for numerousB-decay branching rations allow for further tests and for a determination of so far unknown decay constants. A first bound on |Vub| from nonleptonic decays is found from the experimental limit on\(\bar B^0 \to \pi ^ + \pi ^ - \).

Copyright information

© Springer-Verlag 1987

Authors and Affiliations

  • M. Bauer
    • 1
  • B. Stech
    • 1
  • M. Wirbel
    • 2
  1. 1.Institut für Theoretische Physik der UniversitätHeidelbergFederal Republic of Germany
  2. 2.Institut für Theoretische Physik der UniversitätDortmundFederal Republic of Germany