Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-11-29
Nucl.Phys. B849 (2011) 213-249, Erratum-ibid. B856 (2012) 125-127
Physics
High Energy Physics
High Energy Physics - Phenomenology
42 pages, 15 figures; discussion of on-shell masses added, renormalization of the electric charge and Bremsstrahlung integrals
Scientific paper
10.1016/j.nuclphysb.2011.03.018
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. However, in case of a bino-like or a singlino-like neutralino the corrections can go up to 50% and more. Moreover we present the public program CNNDecays performing these calculations.
Liebler Stefan
Porod Werner
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