Calculation of pure annihilation type decay B+ → Ds+φ
CCAST (World Laboratory), P.O. Box 8730, Beijing 100080, P.R. China
2 Institute of High Energy Physics, CAS, P.O. Box 918(4) Beijing 100039, P.R. China
Corresponding author: a firstname.lastname@example.org
Published online: 5 April 2002
The rare decay B+ → Ds+φ 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+ → Ds+φ 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.
© Società Italiana di Fisica, Springer-Verlag, 2002