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arXiv · hep-ph/9402227

CP Violation and Strong Phases from Penguins in $\bf B^{\pm}\rightarrow VV$ Decays

G. Kramer·W. F. Palmer·H. Simma
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Abstract

We calculate direct CP-violating observables in charged $B\to VV$ decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order $α_s$ from absorptive parts of one-loop matrix elements of the next-to-leading logarithm corrected effective Hamiltonian. CPT constraints are maintained. Based on this model, we find that partial rate asymmetries between charge conjugate $B^{\pm}$ decays can be as high as 15-30\% for certain channels with branching ratios in the $10^{-6}$ range. The small values of the coefficients of angular correlations, which we calculated previously to be of order $10^{-2}$, are not significantly degraded by the strong phases. The charge asymmetries of rates and angular distributions would provide unambiguous evidence for direct CP violation.

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G. Kramer, W. F. Palmer, H. Simma. 1994-02-04. CP Violation and Strong Phases from Penguins in $\bf B^{\pm}\rightarrow VV$ Decays. https://doi.org/10.1016/0550-3213(94)90192-9

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