2010

Electroweak corrections to Neutralino and Chargino decays into a W-boson in the (N)MSSM

Liebler, Stefan, Porod, Werner

Understand

We present the complete electroweak one-loop corrections to the partial widths for two-body decays of a chargino (neutralino) into a W-boson and a neutralino (chargino).

  • We perform the calculation for the minimal and the next-to-minimal supersymmetric standard model using an on-shell renormalization scheme.
  • Particular attention is paid to the question of gauge invariance which is achieved using the so-called pinch technique.
  • Furthermore we show that these corrections show a strong parameter dependence and usually are in the range of 1-10 percent if the neutralino involved is a higgsino or wino like state.

Reading the bibliography…