Some Remarks on the Final State Interactions in $B\to πK$ Decays

Details Some Remarks on the Final State Interactions in $B\to πK$ Decays Some Remarks on the Final State Interactions in $B\to πK$ Decays

1999-01-26

arxiv.org/abs/hep-ph/9901410v2

Commun.Theor.Phys. 34 (2000) 567-570

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, use elsart.sty; The previous version is erroneous in explaining the "charm peguin" effects. No large enhancement to $

Scientific paper

Careful discussions are made on some points which are met in studying B decay final state interactions, taking the $B^0\to \pi^+ K^-$ process as an example. We point out that $\pi$--exchange rescatterings are not important, whereas for $D^*$ and $D^{**}$ exchanges, since the $B^0\to D^+D_s^-$ decay has a large branching ratio their contributions may be large enough to enhance the $B\to \pi K$ branching ratio significantly. However our estimates fail to predict a large enhancement.

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