Abstract
We discuss the observability of CP-violating asymmetries in the process e + e − → χ ˜ 1 0 χ ˜ 2 0 → χ ˜ 1 0 χ ˜ 1 0 ℓ + ℓ − , with ℓ = e , μ . We consider two examples of supersymmetric scenarios: (i) with decays χ ˜ 2 0 → ℓ ˜ R ± ℓ ∓ → χ ˜ 1 0 ℓ + ℓ − ; (ii) with χ ˜ 2 0 three-body decays. The asymmetries can be of order 0.1 but they are partially washed out by the large backgrounds from W + W − and slepton pair production, being the observed asymmetries one order of magnitude smaller. However, with appropriate kinematical cuts they can be observed at an e + e − collider with a centre of mass energy of 500 GeV and high luminosity.
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