Dortmund 2021 – scientific programme

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T: Fachverband Teilchenphysik

T 51: BSM physics (theory)

T 51.6: Talk

Wednesday, March 17, 2021, 17:15–17:30, Ta

Dark Matter and nature of Electroweak Phase Transition in the Inert Doublet Model — •Sven Fabian¹, Florian Goertz¹, and Yun Jiang² — ¹Max-Planck-Institut für Kernphysik, Heidelberg, Germany — ²TianQin Research Center for Gravitational Physics & School of Physics and Astronomy, Zhuhai, P.R. China

In this talk, we will provide a comprehensive analysis of the prospect to realize Dark Matter (DM) and to enhance the Electroweak Phase Transition (EWPhT) in the Inert Doublet Model. Taking the latest constraints from collider physics and direct-detection experiments into account, we will investigate the possibility of a strong first-order EWPhT via one or two steps in combination with a significant amount of the measured DM abundance both in the low-mass and in the high-mass regime, exploring also new regions of parameter space. We will find that the low-mass regime leads to a parameter space providing a significant DM abundance as well as to a strong first-order EWPhT either via one or two steps. On the contrary, the high-mass regime either gives rise to a significant amount of DM or to a strong first-order EWPhT, the latter being necessary for explaining the present baryon-antibaryon asymmetry.