Vector Dark Matter through a Radiative Higgs Portal

TL;DR

This paper introduces a new UV completion for vector dark matter interacting via the Higgs portal, demonstrating its viability as a thermal relic consistent with experimental constraints.

Contribution

It proposes an alternative UV completion involving vector-like fermions that generate Higgs-dark matter interactions at one loop.

Findings

Dark matter candidate is a viable thermal relic.

Model satisfies Higgs invisible width constraints.

Model complies with direct detection bounds.

Abstract

We study a model of spin-1 dark matter which interacts with the Standard Model predominantly via exchange of Higgs bosons. We propose an alternative UV completion to the usual Vector Dark Matter Higgs Portal, in which vector-like fermions charged under SU(2)$_W \times$ U(1)$_Y$ and under the dark gauge group, U(1)$^\prime$, generate an effective interaction between the Higgs and the dark matter at one loop. We explore the resulting phenomenology and show that this dark matter candidate is a viable thermal relic and satisfies Higgs invisible width constraints as well as direct detection bounds.