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T: Fachverband Teilchenphysik

T 71: Supersymmetry: Theory and searches

T 71.1: Vortrag

Donnerstag, 2. April 2020, 16:30–16:45, H-HS VI

Study of thesensitivity of the ATLAS experiment to the phenomenological MSSM afterRun 2 — •Christoph Ames and Alexander Mann — Ludwig-Maximilians-Universität, Munich

Supersymmetry (SUSY) is a framework that can be used to solve many problems that cannot be explained with the Standard Model, such as the hierarchy problem or the existence of dark matter. SUSY can be implemented in many different models, one of which is the phenomenological Minimal Supersymmetric Model (pMSSM), a simplified version of the MSSM. In this model, it is assumed that all parameters are real, which eliminates the possibility of CP violation through SUSY. Flavour-changing neutral currents are excluded and the first and second generations of supersymmetric fermions are considered to be degenerate. Also, the Yukawa couplings for the first two generations are assumed small and negligible. Therefore, the pMSSM can be described with only 19 parameters and it is feasible to run scans over the phase space to learn more about the behaviour of supersymmetric particles. We evaluate ATLAS analyses that use the Run 2 data of the LHC by performing such scans. With this information, regions of phase space to which current analyses are not sensitive can be identified. The final goal is a statement about the combined sensitivity of ATLAS analyses in the pMSSM.