Nanjing Normal Univ, Dept Phys, Nanjing 210097, Peoples R China
; CAS, Inst High Energy Phys, Beijing 100039, Peoples R China
The rare decay B+ --> D-8(+) (K) over bar (*0) can occur only via annihilation diagrams in the Standard Model. We calculate the branching ratio in perturbative QCD approach based on k(T) factorization theorem. We find that the branching ratio of this decay is about of order 10(-8), which may be sensitive to new physics.