CP violation in e+e- -> t tbar: Energy Asymmetries and Optimal Observables of b and bbar Quarks

Details CP violation in e+e- -> t tbar: Energy Asymmetries and Optimal Observables of b and bbar Quarks CP violation in e+e- -> t tbar: Energy Asymmetries and Optimal Observables of b and bbar Quarks

1998-03-23

arxiv.org/abs/hep-ph/9803426v2

Phys.Rev. D59 (1999) 077503

Physics

High Energy Physics

High Energy Physics - Phenomenology

9 pages LaTeX with 2 eps-figures included; revised version, including optimal observables

Scientific paper

10.1103/PhysRevD.59.077503

The energy spectra of the b and bbar quarks in e+e- -> t tbar with t -> b W (tbar -> bbar W) are calculated assuming CP violation in the production process. Expressions for the corresponding CP violating asymmetries and optimal observables that determine the imaginary parts of the electric and weak dipole moment form factors of the top are derived. It is shown that polarization of the initial lepton beams is essential to disentangle Im d^{\gamma}(s) and Im d^{Z}(s). Numerical results are given in the Minimal Supersymmetric Standard Model with complex phases.

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