Affiliation:
1. Laboratory of Theoretical and High Energy Physics
2. Laboratory of Subatomic Physics and Cosmology
3. Karlsruhe Institute of Technology
Abstract
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 low-energy 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.
Funder
Agence Nationale de la Recherche
Consejo Nacional de Ciencia y Tecnología
Deutsche Forschungsgemeinschaft
Institut National de Physique Nucléaire et de Physique des Particules
Subject
General Physics and Astronomy
Cited by
13 articles.
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