Direct CP Violation Asymmetries in Exclusive B Decays in a Bethe-Salpeter Approach

Abstract

CP asymmetry in some exclusive decays of charged B meson are calculated in a Bethe-Salpeter approach. Hadronic final state interactions are ignored. Complex decay amplitudes are assumed to arise entirely from perturbative quark-antiquark loops. Calculations are done both with and without the gluon quark-antiquark vacuum polarization loops. The effects of neglecting the imaginary parts arising from the diagonal quark-antiquark loops are also studied.

15 pages, Latex, 2 eps-figures. Minor revisions. To be published in Phys.Lett.B

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• The final-state interaction phases of the two-body B decay: The bounds from the updated data
• Nonfactorization in Cabibbo-Favored B Decays
• Factorization and Nonfactorization in B Decays
• Measuring sin 2βin Bs(t) -> phi K_s