Speaker
Description
Although the Standard Model is very successful, there are still open
problems which it cannot explain, one of it being dark matter (DM).
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. Further extensions with
a complex singlet lead to a natural DM candidate.
The aim of this work is to explore the dark sector in a Two
Higgs Doublet Model extended by a complex scalar singlet, where the
imaginary component of the singlet gives rise to a pseudo-scalar DM
candidate. Both, the doublets, and the singlet, obtain a vacuum ex-
pectation value (vev), where the singlet vev leads to additional mixing
of the doublet and the singlet scalar sector. We examine the influence
of the Higgs sector parameters on DM relic density as well as direct and indirect detection cross sections. The results are then compared with
constraints from experiments.
