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Résumé |
I will discuss a new take on the idea of scalar dark matter produced through
interactions with the Standard Model Higgs boson. If the dark matter particles
have no stabilising symmetry, they can mix with Standard Model Higgs Bosons and
very small couplings are required for cosmological stability. Dark matter can
then no longer be produced through the standard WIMP mechanism, but only via
non-thermal processes such as freeze-in. The resulting cosmological evolution
of scalar dark matter turns out to be quite complicated, and I will review the
different steps and the resulting phenomenology. Intriguingly, light scalars
are found to have potential signatures in indirect detection experiments as
well as observable self-interactions. |
