Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 36: Higgs Boson: Extended Models 1

T 36.8: Vortrag

Dienstag, 22. März 2022, 18:00–18:15, T-H21

Dark Matter Phenomenology in Two Higgs Doublet Model with a Complex Singlet — Gudrid Moortgat-Pick, Juhi Dutta, and •Julia Ziegler — II. Institut für Theoretische Physik Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany

Although the Standard Model is very successful, there are still open problems which it cannot explain. (e.g. dark matter, baryon asymmetry etc.) This has led to various Beyond Standard Model theories, of which Two Higgs Doublet models are very popular, as they are one of the simplest extensions and lead to a rich phenomenology. We consider a Two Higgs Doublet model extended by a complex singlet scalar, where both, the doublets, as well as the singlet obtain a vacuum expectation value (vev). The singlet serves as a dark matter candidate. This model can solve the above mentioned problems and can also provide gravitational wave signals under specific circumstances, respectively. Furthermore one could obtain additional mixing of the dark matter and Higgs sector through the singlet vev. In this work we examine the influence of the parameters of the singlet potential on the dark matter relic density and nuclear scattering cross sections. The results are then compared with constraints from experiments.