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Recently Osland and Vereshagin noticed, based on sample calculations of somebox diagrams, that in unpolarised e+e- collisions CP-odd effects in thenon-diagonal chargino-pair production process are generated at one-loop. Herewe perform a full one-loop analysis of these effects and point out that in somecases the neglected vertex and self-energy contributions may play a dominantrole. We also show that CP asymmetries in chargino production are sensitive notonly to the phase of mu parameter in the chargino sector but also to the phaseof stop trilinear coupling A_t.

CP violation at one loop in the polarization-independent chargino production in e+e- collisions