CP violation in Bd0→τ+τ- decays

Establishing CP violation in B-0((B) over bar (0)) -> l(+)l(-) decays requires a measurement of polarization of the final lepton pair, or a precise determination of the B-0 -> l(+)l(-) and (B) over bar (0) -> l(+)l(-) 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 tan beta, 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 iota(+)iota(-) decay channel of B-d(0)((B) over bar (0)(d)) mesons, potentially measurable in Belle or BaBar experiments. Secondly, we show that the existing TAUOLA iota-lepton decay library supplemented by its universal interface can efficiently be used to search for B-0((B) over bar (0)) -> iota(+)iota(-) decays, and to investigate how the CP asymmetry is reflected in realistic experimental observables. (c) 2005 Elsevier B.V. All rights reserved.