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We calculate chargino production at a future linear collider, including fullone-loop contributions in the MSSM with complex parameters. To achieve this, werequire a comprehensive approach to renormalisation in the chargino andneutralino sector, for the case where parameters can be complex. Using thefield renormalisation as developed in Refs. [1-3], we investigate the parameterrenormalisation in the complex case. We also study the numerical role of thechoice of renormalisation scheme as in Refs. [2-3]. Finally we present newresults showing the effect of the phases on the resulting cross section at NLO.

Chargino Production at a future LC in the MSSM with complex Parameters: NLO Corrections