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

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

1994-02-04

arxiv.org/abs/hep-ph/9402227v1

Nucl.Phys.B428:77-97,1994

Physics

High Energy Physics

High Energy Physics - Phenomenology

24 pages, 3 figures (upon request), LaTeX, preprint DESY 93-192

Scientific paper

10.1016/0550-3213(94)90192-9

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 $\alpha_s$ 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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