Hadronic Rare $B$ Decays via Exchange or Annihilation Diagrams

Details Hadronic Rare $B$ Decays via Exchange or Annihilation Diagrams Hadronic Rare $B$ Decays via Exchange or Annihilation Diagrams

1995-12-11

arxiv.org/abs/hep-ph/9512280v1

Phys.Rev. D53 (1996) 2847-2850

Physics

High Energy Physics

High Energy Physics - Phenomenology

Postscript 8 pages. (P.R.D, in press)

Scientific paper

10.1103/PhysRevD.53.2847

The two-body mesonic $B$ decays induced only via a single $W$-exchange or annihilation quark diagram, such as $B^-_u\rightarrow D^{(*)-}_sK^{(*)0}$ and $\bar{B}^0_d\rightarrow D^{(*)+}_sK^{(*)-}$, are analyzed in the factorization approximation. We estimate the branching ratios for those transitions into two pseudoscalar mesons, and find them to be negligibly small. The significant effect of final-state rescattering is illustrated by taking $B^-_u\rightarrow D^-\bar{K}^0$ for example.

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