Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in s=8 TeV proton-proton collisions
Dark matter interpretations of ATLAS searches for the electroweak production of supersymmetric particles in s=8 TeV proton-proton collisions
A selection of searches by the ATLAS experiment at the LHC for the electroweak production of SUSY particles are used to study their impact on the constraints on dark matter candidates. The searches use 20 fb−1 of proton-proton collision data at s=8$$ \sqrt{s}=8 $$ TeV. A likelihood-driven scan of a five-dimensional effective model focusing on the gaugino-higgsino and Higgs sector of the phenomenological minimal supersymmetric Standard Model is performed. This scan uses data from direct dark matter detection experiments, the relic dark matter density and precision flavour physics results. Further constraints from the ATLAS Higgs mass measurement and SUSY searches at LEP are also applied. A subset of models selected from this scan are used to assess the impact of the selected ATLAS searches in this five-dimensional parameter space. These ATLAS searches substantially impact those models for which the mass mχ˜10$$ m\left({\tilde{\chi}}_1^0\right) $$ of the lightest neutralino is less than 65 GeV, excluding 86% of such models. The searches have limited impact on models with larger mχ˜10$$ m\left({\tilde{\chi}}_1^0\right) $$ due to either heavy electroweakinos or compressed mass spectra where the mass splittings between the produced particles and the lightest supersymmetric particle is small.
- Helmholtz Association of German Research Centres Germany
- Queen Mary University of London United Kingdom
- University of Rome Tor Vergata Italy
- University of Milan Italy
- University of Edinburgh United Kingdom
Nuclear and High Energy Physics, p p: scattering, data analysis method, VIOLATION, neutralino: mass, Particles & Fields, DYNAMICAL SYMMETRY-BREAKING, EFFICIENT, dark matter: density, 530, Hadron-Hadron scattering (experiments); Nuclear and High Energy Physics, Physics, Particles & Fields, mass spectrum, MONTE-CARLO, Hadron-Hadron scattering (experiments), PROGRAM, HADRON COLLIDERS, ATLAS detector; electroweak production; dark matter, info:eu-repo/classification/ddc/530, 01 Mathematical Sciences, 8000 GeV-cms, p p: scattering ; p p: colliding beams ; sparticle: pair production ; dark matter: density ; ATLAS ; electroweak interaction ; supersymmetry: parameter space ; minimal supersymmetric standard model ; mass difference ; CERN LHC Coll ; CERN LEP Stor ; mass spectrum ; neutralino: mass ; flavor ; data analysis method ; experimental results ; 8000 GeV-cms ; Hadron-Hadron scattering (experiments), flavor, Science & Technology, 02 Physical Sciences, electroweak interaction, Physics, 500, minimal supersymmetric standard model, CERN LEP Stor, supersymmetry: parameter space, mass difference, ATLAS, Nuclear & Particles Physics, Settore FIS/01 - FISICA SPERIMENTALE, sparticle: pair production, MODEL, CERN LHC Coll, COSMOLOGY, Physical Sciences, MEASURING MASSES, 5106 Nuclear and Plasma Physics, p p: colliding beams, 51 Physical Sciences, EXTENSION, 5107 Particle and High Energy Physics, experimental results
Nuclear and High Energy Physics, p p: scattering, data analysis method, VIOLATION, neutralino: mass, Particles & Fields, DYNAMICAL SYMMETRY-BREAKING, EFFICIENT, dark matter: density, 530, Hadron-Hadron scattering (experiments); Nuclear and High Energy Physics, Physics, Particles & Fields, mass spectrum, MONTE-CARLO, Hadron-Hadron scattering (experiments), PROGRAM, HADRON COLLIDERS, ATLAS detector; electroweak production; dark matter, info:eu-repo/classification/ddc/530, 01 Mathematical Sciences, 8000 GeV-cms, p p: scattering ; p p: colliding beams ; sparticle: pair production ; dark matter: density ; ATLAS ; electroweak interaction ; supersymmetry: parameter space ; minimal supersymmetric standard model ; mass difference ; CERN LHC Coll ; CERN LEP Stor ; mass spectrum ; neutralino: mass ; flavor ; data analysis method ; experimental results ; 8000 GeV-cms ; Hadron-Hadron scattering (experiments), flavor, Science & Technology, 02 Physical Sciences, electroweak interaction, Physics, 500, minimal supersymmetric standard model, CERN LEP Stor, supersymmetry: parameter space, mass difference, ATLAS, Nuclear & Particles Physics, Settore FIS/01 - FISICA SPERIMENTALE, sparticle: pair production, MODEL, CERN LHC Coll, COSMOLOGY, Physical Sciences, MEASURING MASSES, 5106 Nuclear and Plasma Physics, p p: colliding beams, 51 Physical Sciences, EXTENSION, 5107 Particle and High Energy Physics, experimental results
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