Bonn 2020 – scientific programme

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T: Fachverband Teilchenphysik

T 4: Dark matter: theory

T 4.1: Talk

Monday, March 30, 2020, 16:30–16:45, H-HS II

Impact of SUSY parameters on dark matter prediction — •Marten Berger and Gudrid Moortgat-Pick — II. Institute of Theoretical Physics, University of Hamburg, 22761 Hamburg, Germany

The Minimal Supersymmetric Standard Model (MSSM) is one of the best motivated extensions of the Standard Model (SM): it is of high predictive power and can explain the main open questions of the SM. For instance, if offers a well-motivated cold dark matter candidate. A crucial question is therefore whether this model can explain the correct amount of relic density with its cold dark matter candidate. For calculations of the relic density within the MSSM information about the mass of the lightest supersymmetric particle (LSP) as well as the mass of other particles which play a key role in the dominant mechanisms of annihilation are needed. Since the mixing character can rapidly change depending on the actual parameter point and consequently has immediate influence on the relic density contribution it is necessary to include one-loop corrections in the calculations of the dark matter observables. In this talk the determination of the fundamental SUSY parameter determinations from chargino production at a linear collider will be discussed with the focus on its impact on the contribution on the corresponding relic density.