  Supersymmetric models with Dirac instead of Majorana gaugino masses have
distinct phenomenological consequences. In this paper, we investigate the
electroweakino sector of the Minimal Dirac Gaugino Supersymmetric Standard
Model (MDGSSM) with regards to dark matter (DM) and collider constraints. We
delineate the parameter space where the lightest neutralino of the MDGSSM is a
viable DM candidate, that makes for at least part of the observed relic
abundance while evading constraints from DM direct detection, LEP and lowenergy
data, and LHC Higgs measurements. The collider phenomenology of the thus
emerging scenarios is characterised by the richer electroweakino spectrum as
compared to the Minimal Supersymmetric Standard Model (MSSM) -- 6 neutralinos
and 3 charginos instead of 4 and 2 in the MSSM, naturally small mass
splittings, and the frequent presence of long-lived particles, both charginos
and/or neutralinos. Reinterpreting ATLAS and CMS analyses with the help of
SModelS and MadAnalysis 5, we discuss the sensitivity of existing LHC searches
for new physics to these scenarios and show which cases can be constrained and
which escape detection. Finally, we propose a set of benchmark points which can
be useful for further studies, designing dedicated experimental analyses and/or
investigating the potential of future experiments.
