One-loop corrections to the chargino and neutralino mass matrices in the on-shell scheme

Abstract

We present a consistent procedure for the calculation of the one-loop corrections to the charginos and neutralinos by using their on-shell mass matrices. The on-shell gaugino mass parameters M and M', and the Higgsino mass parameter μare defined by the elements of these on-shell mass matrices. The on-shell mass matrices are different by finite one-loop corrections from the tree-level ones given in terms of the on-shell parameters. When the on-shell M and μare determined by the chargino sector, the neutralino masses receive corrections up to 4%. This must be taken into account in precision measurements at future e^+ e^- linear colliders.

One reference added, typo in eq. (20) corrected

References in corpus (1)

• Gauge dependence of the on-shell renormalized mixing matrices

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