Chair: E. Peinado
Alexis Plascencia (IPPP, Durham University)
In this talk I aim to draw some connections between dark matter and leptogenesis, by connecting both to a single energy scale which is radiatively generated and therefore exponentially suppressed compared to the UV cutoff of the theory. In our setup we extend the Standard Model (SM) by a dark sector, namely a non-abelian SU(2) hidden sector that is coupled to the SM via the Higgs portal, and a...
Isabel Garcia Garcia (University of Oxford)
In this talk, I explore the early cosmology and the possibilities for dark matter candidates in Twin Higgs theories of the weak scale -- in particular, within a minimal implementation, the Fraternal Twin Higgs. The phenomenology of this class of models is rich: some highlights include the presence of a “twin WIMP miracle”; asymmetric twin dark matter made of twin baryons with the correct mass...
Stefan Vogl (Karlsruher Institut für Technologie)
We show that simplified models used to describe the interactions of dark matter with Standard Model particles do not in general respect gauge invariance and that perturbative unitarity may be violated in large regions of the parameter space. The modifications necessary to cure these inconsistencies may imply a much richer phenomenology and lead to stringent constraints on the model. We...
Marek Lewicki (University of Warsaw)
I will discuss the impact on electroweak baryogenesis from a swifter cosmological expansion induced by modified cosmological history of the universe. I will also detail the experimental bounds that one can place on such models. The modifications can be sizeable if the expansion rate of the Universe increases by several orders of magnitude. I will focus on the Standard Model supplemented...