Conveners
Parallel Session PI.7
- Igor Ivanov
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Dr Yu Hamada (DESY)04/06/2024, 16:40
Within the WIMP paradigm, a Higgs-portal DM that interacts with SM particles through Higgs-portal interaction is a simple and testable scenario. On the other hand, such models are severely constrained by DM direct detection experiments. It is not easy to avoid the constraint maintaining the correct DM relic abundance unless the DM mass is fine-tuned to be around the resonance. Recently,...
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Rafael Filipe Teixeira Boto (Instituto Superior Técnico)04/06/2024, 17:00
We consider a model with two inert scalars, originating two dark matter (DM) particles. We identify the criteria ensuring that the inert vacuum is the global minimum. While taking into account all the theoretical and current experimental constraints, we find unexplored regions of parameter space where the two DM candidates contribute equally to the experimental relic density.
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Anton Kunčinas (CFTP/IST, U. Lisboa)04/06/2024, 17:20
We explore three-Higgs-doublet models that may accommodate scalar Dark Matter where the stability is based on an unbroken $U(1)$-based symmetry, rather than the familiar $\mathbb{Z}_2$ symmetry. We try to classify all possible ways of embedding a $U(1)$ symmetry in a three-Higgs-doublet model. The class of such models is presented and models are compared. These models all contain...
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Anna Jankowsky (University of Munich (LMU))04/06/2024, 17:40
The color-triplet partner of the Higgs doublet is a model-independent prediction of grand unification.
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It has been shown some time ago that this particle can be much lighter than the GUT scale, all the way
to TeV mass range, and correspondingly very long lived. In this presentation we concentrate on a stable $(\tau > t_{universe})$
triplet and investigate its astrophysical and...