CP violation in image decays Original Research Article

Establishing CP violation in image decays requires a measurement of polarization of the final lepton pair, or a precise determination of the image and image rates. We first argue that if the amplitudes of these decays are dominated by the scalar and pseudoscalar Higgs penguin diagrams, as happens, e.g., in supersymmetry with large image, the CP asymmetries depend practically on only one CP violating phase. This phase can be large, of the order of the CKM phase, leading to large CP asymmetries in the image decay channel of image mesons, potentially measurable in Belle or BaBar experiments. Secondly, we show that the existing TAUOLA τ-lepton decay library supplemented by its universal interface can efficiently be used to search for image decays, and to investigate how the CP asymmetry is reflected in realistic experimental observables.