Analysis of $B_{s} \to KK$ decays in the PQCD

Details Analysis of $B_{s} \to KK$ decays in the PQCD Analysis of $B_{s} \to KK$ decays in the PQCD

2001-07-17

arxiv.org/abs/hep-ph/0107189v4

Phys.Lett. B520 (2001) 33-40

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, 4 figures, references added, abstract extended slightly, final version to appear in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(01)01117-0

We study $B_{s}\to KK$ decays in the framework of the PQCD. We show that the branching ratios of $B_{s}\to (K^+ K^-, K^0 \bar{K}^0)$ are about $(22.43, 25.78) \times 10^{-6}$ for $\phi_{3}(\gamma)\simeq72^0$, which are consistent with the model-independent estimations. We find that the typical scale of the decays is near 1.7 GeV. We also point out that the induced strong phase $\delta$ is around $207^0$ so that the direct CP asymmetry of $B_{s}\to K^+K^-$ could reach 15%.

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