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 — preprints:1997:ttp97-22 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP97-22 New physics in penguin dominated $B \to \pi K$ decays  ====== + + + 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. + + + |**Robert Fleischer, Thomas Mannel**  | + | {{preprints:1997:ttp97-22.pdf|PDF}} {{preprints:1997:ttp97-22.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9706261|arXiv]]   | + | |