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\(B\to \pi \rho, \pi \omega\) decays in perturbative QCD approach

  • C.-D. Lü
  • M.-Z. Yang
Theoretical physics

Abstract.

We calculate the branching ratios and CP-asymmetries for \(B^0 \to \pi^+\rho^-, B^0 \to \rho^+\pi^-, B^+ \to \rho^+\pi^0\), \(B^+ \to \pi^+\rho^0, B^0 \to \pi^0\rho^0, B^+ \to \pi^+\omega\) and \(B^0 \to \pi^0\omega\) decays, in the perturbative QCD approach. In this approach, we calculate non-factorizable and annihilation type contributions, in addition to the usual factorizable contributions. Our result is in agreement with the branching ratio of \(B^0/\bar B^0 \to \pi^\pm\rho^\mp, B^\pm \to \pi^\pm\rho^0\), \(\pi^\pm \omega\) measured by the CLEO and BABAR collaborations. We also predict large CP-asymmetries in these decays. These channels are useful to determine the CKM angle \(\phi_2\).

Keywords

Type Contribution BABAR Collaboration Factorizable Contribution Annihilation Type 
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 Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

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

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