Interplay of the Cabibbo-Kobayashi-Maskawa {ital CP}-violating phase and penguin diagram effects in {ital {bar B}}{r_arrow}{pi}{pi}
- Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)
We use the perturbative QCD methods of Lepage and Brodsky to calculate the rate for {ital {bar B}}{r_arrow}{pi}{pi}, with an eye toward the {ital CP}-violating unitarity triangle angle {alpha}. We show that, in the {pi}{sup +}{pi}{sup {minus}} mode, penguin diagrams are small and {alpha} is generally measurable but that, in the {pi}{sup 0}{pi}{sup 0} mode, the relative importance of penguin diagrams is a strong function of the {ital CP}-violating phase {delta}{sub 13} in the Cabibbo-Kobayashi-Maskawa mixing matrix.
- DOE Contract Number:
- FG05-91ER40627; AC03-76SF00515
- OSTI ID:
- 45682
- Journal Information:
- Physical Review, D, Journal Name: Physical Review, D Journal Issue: 11 Vol. 51; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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