International Workshop on Future Linear Colliders 2026

Dark Matter Determination at future e+e- Colliders

Not scheduled

20m

KEK

Oral presentation Beyond the Standard Model Beyond Standard Model

Speaker

Sven Heinemeyer (Consejo Superior de Investigaciones Cientificas (CSIC) (ES))

Description

We assume that the lightest SUSY particle, the lightest neutralino (n1) is our DM candidate (in the MSSM or the NMSSM). We use future e+e- data, particular on the production cross section of the lightest chargino, to reconstruct the underlying parameters and thus to determine the relic density, to be compared with the measured value. The concrete examples are taken from the excesses seen by ATLAS and CMS in the compressed spectra SUSY searches. We find that the relic density can be reconstructed at the level of 10-20%, which constitutes an important test of the underlying model.