Abstract.
The mass spectrum of the chargino–neutralino sector in the minimal supersymmetric standard model (MSSM) is calculated at the one-loop level, based on the complete set of one-loop diagrams. On-shell renormalization conditions are applied to determine the counterterms for the gaugino-mass-parameters \(M_1, M_2\) and the Higgsino-mass parameter \(\mu\). The input is fixed in terms of three pole masses (two charginos and one neutralino); the other pole masses receive a shift with respect to the tree-level masses, which can amount to several GeV. The detailed evaluation shows that both the fermionic/sfermionic loop contributions and the non-(s)fermionic loop contributions are of the same order of magnitude and are thus relevant for precision studies at future colliders.
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Received: 26 April 2002 / Published online: 21 June 2002
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Fritzsche, T., Hollik, W. Complete one-loop corrections to the mass spectrum of charginos and neutralinos in the MSSM. Eur. Phys. J. C 24, 619–629 (2002). https://doi.org/10.1007/s10052-002-0992-0
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DOI: https://doi.org/10.1007/s10052-002-0992-0