New physics in penguin dominated $B \to πK$ decays

Details New physics in penguin dominated $B \to πK$ decays New physics in penguin dominated $B \to πK$ decays

1997-06-05

arxiv.org/abs/hep-ph/9706261v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, LaTeX, 4 figures. The complete paper is also available via anonymous ftp at ftp://www-ttp.physik.uni-karlsruhe.de/ ,

Scientific paper

Measurements of the combined branching ratios for $B^\pm \to \pi^\pm K$ and $B_d \to \pi^\mp K^\pm$ allow interesting constraints on the CKM angle $\gamma$, the ratio $r \equiv |T'|/|P'|$ of the current-current and penguin operator contributions to $B_d \to \pi^\mp K^\pm$, and the CP asymmetry in that decay. Present CLEO results for these branching ratios indicate where problems with consistency of the Standard Model may arise in the future. In this paper we discuss scenarios of new physics in these decays and investigate their implications for the above constraints.

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