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arXiv · 1403.4960

Minimal semi-annihilating $\mathbb{Z}_N$ scalar dark matter

Geneviève Bélanger·Kristjan Kannike·Alexander Pukhov·Martti Raidal
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Abstract

We study the dark matter from an inert doublet and a complex scalar singlet stabilized by $\mathbb{Z}_N$ symmetries. This field content is the minimal one that allows dimensionless semi-annihilation couplings for $N > 2$. We consider explicitly the $\mathbb{Z}_3$ and $\mathbb{Z}_4$ cases and take into account constraints from perturbativity, unitarity, vacuum stability, necessity for the electroweak $\mathbb{Z}_N$ preserving vacuum to be the global minimum, electroweak precision tests, upper limits from direct detection and properties of the Higgs boson. Co-annihilation and semi-annihilation of dark sector particles as well as dark matter conversion significantly modify the cosmic abundance and direct detection phenomenology.

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Geneviève Bélanger, Kristjan Kannike, Alexander Pukhov, Martti Raidal. 2014-03-19. Minimal semi-annihilating $\mathbb{Z}_N$ scalar dark matter. https://doi.org/10.1088/1475-7516%2F2014%2F06%2F021

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