====== TTP97-22 New physics in penguin dominated $B \to \pi K$ decays  ======
 
 
   <hidden 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.
 
 </hidden>
|**Robert Fleischer, Thomas Mannel**  | 
| {{preprints:1997:ttp97-22.pdf|PDF}} {{preprints:1997:ttp97-22.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9706261|arXiv]]   |
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