English

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

High Energy Physics - Phenomenology 2010-11-01 v1

Abstract

We calculate direct CP-violating observables in charged BVVB\to VV decays arising from the interference of amplitudes with different strong and CKM phases. The perturbative strong phases develop at order αs\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±B^{\pm} decays can be as high as 15-30\% for certain channels with branching ratios in the 10610^{-6} range. The small values of the coefficients of angular correlations, which we calculated previously to be of order 10210^{-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.

Keywords

Cite

@article{arxiv.hep-ph/9402227,
  title  = {CP Violation and Strong Phases from Penguins in $\bf B^{\pm}\rightarrow VV$ Decays},
  author = {G. Kramer and W. F. Palmer and H. Simma},
  journal= {arXiv preprint arXiv:hep-ph/9402227},
  year   = {2010}
}

Comments

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