Erlangen 2026 – scientific programme

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T: Fachverband Teilchenphysik

T 79: Searches/BSM IV

T 79.6: Talk

Thursday, March 19, 2026, 17:30–17:45, KH 02.018

Testing Supersymmetric Dark Matter Scenarios through Electroweakino Parameter Determination — •Nele Peters and Gudrid Moortgat-Pick — Department of Physics, University of Hamburg

Supersymmetric models provide well-motivated candidates for particle dark matter, but testing their viability requires precise knowledge of the underlying electroweakino parameters. In this talk, we investigate how accurately a future International Linear Collider (ILC) could determine the key parameters M1, M2, and μ in dark-matter motivated supersymmetric scenarios, here evaluated for an NMSSM benchmark. Using simulated measurements of polarized chargino-pair production and the masses of the lightest chargino and neutralino, we assess the sensitivity of these observables to the electroweakino sector and quantify the achievable reconstruction precision. From the reconstructed parameter sets, the dark-matter relic density is computed and compared to the benchmark values. The study demonstrates the potential of precision lepton-collider data to constrain supersymmetric dark-matter scenarios and to evaluate their consistency with cosmological observations.

Keywords: Dark Matter; Supersymmetry; Elektroweakinos; International Linear Collider; Parameter Reconstruction