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Exclusive non-leptonic decays ofD-,D s - andB-mesons

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Zeitschrift für Physik C Particles and Fields

Abstract

Recent experimental results onD-,D s - 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\(D^0 \to \bar K^0 \phi \) withD s →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 betweenD 0 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 |V ub | from nonleptonic decays is found from the experimental limit on\(\bar B^0 \to \pi ^ + \pi ^ - \).

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Authors and Affiliations

  1. Institut für Theoretische Physik der Universität, D-6900, Heidelberg, Federal Republic of Germany

    M. Bauer & B. Stech

  2. Institut für Theoretische Physik der Universität, D-4600, Dortmund, Federal Republic of Germany

    M. Wirbel

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  1. M. Bauer
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  2. B. Stech
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  3. M. Wirbel
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Bauer, M., Stech, B. & Wirbel, M. Exclusive non-leptonic decays ofD-,D s - andB-mesons. Z. Phys. C - Particles and Fields 34, 103–115 (1987). https://doi.org/10.1007/BF01561122

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  • DOI: https://doi.org/10.1007/BF01561122

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