Heidelberg 2022 – wissenschaftliches Programm

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T: Fachverband Teilchenphysik

T 31: Beyond the Standard Model (Theory) 1

T 31.8: Vortrag

Dienstag, 22. März 2022, 18:00–18:15, T-H16

Higher-Dimensional Operators in the Inert Doublet Model: Dark Matter and CP Violation — •María Isabel Dias Astros, Florian Goertz, and Sven Fabian — Max-Planck-Institut für Kernphysik, Heidelberg, Deutschland

Facing the puzzles of dark matter (DM) with its properties yet to be deciphered, the Inert Doublet Model (IDM) has been widely studied as a possible theory explaining DM and in the context of the Electroweak Phase Transition, as a first step towards accommodating the three Sakharov conditions allowing for baryogenesis. Following this motivation, we will discuss in this talk the IDM as an effective field theory (EFT) with a higher-dimensional CP-violating operator added to the scalar potential. Working with the EFT approach, a comprehensive discussion of DM phenomenology with promising parameter space is given, while taking theoretical and the latest experimental constraints into account. In particular, for particles heavier than 500 GeV higher-dimensional derivative operators lead to an extended viable parameter space even for non-(quasi)degenerate scalar masses. We conclude that the discussed sources of CP violation do not spoil the predicted DM relic abundance.