Release Time:2021-09-07  Hits:

Indexed by: Journal Papers

Date of Publication: 2021-01-09

Journal: PHYSICAL REVIEW D

Volume: 100

Issue: 9

ISSN: 2470-0010

Abstract: A full renormalization of the inert doublet model is presented and exploited for a precise calculation of the relic density of dark matter (DM) at one-loop. In this first paper, we study the case of a DM candidate with m(DM) similar to 500 GeV. In this regime, the coannihilation channels are important. We therefore compute, for a wide range of relative velocities, the full next-to-leading order electroweak corrections to seven annihilation/coannihilation processes that contribute similar to 70% to the relic density of DM. These corrected cross sections are interfaced with micrOMEGAs to obtain the one-loop correction to the freeze-out relic density. Due to the accurate measurement of this observable, the one-loop corrections are relevant. We discuss the one-loop renormalization scheme dependence and point out the influence, at one-loop, of a parameter that solely describes the scattering in the dark sector. A tree-level computation of the relic density is not sensitive to this parameter.