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Complete one-loop corrections to the mass spectrum of charginos and neutralinos in the MSSM

  • T. Fritzsche
  • W. Hollik
Theoretical physics

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.

Keywords

Mass Spectrum Minimal Supersymmetric Standard Model Detailed Evaluation Loop Contribution Pole Masse 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg / Società Italiana di Fisica 2002

Authors and Affiliations

  • T. Fritzsche
    • 1
  • W. Hollik
    • 1
  1. 1.Institut für Theoretische Physik, Universität Karlsruhe, 76128 Karlsruhe, Germany DE

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