Calculation of pure annihilation type decay \(B^+ \to D_s^+ \phi\)

  • C.-D. Lü
Theoretical physics


The rare decay \(B^+ \to D_s^+ \phi\) can occur only via annihilation-type diagrams in the standard model. We calculated this decay in the perturbative QCD approach with Sudakov resummation. We found that the branching ratio of \(B^+ \to D_s^+ \phi\) is of order \(10^{-7}\); this may be measured in the near future by the KEK and SLAC B factories. The small branching ratio predicted in the standard model makes this channel sensitive to new physics contributions.


Rare Decay Physic Contribution Type Decay Sudakov Resummation Pure Annihilation 
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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • C.-D. Lü
    • 1
  1. 1.CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P.R. China CN

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