Relic density of dark matter in the inert doublet model beyond leading order: The heavy mass case

Banerjee, Shankha; Boudjema, Fawzi; Chakrabarty, Nabarun; Chalons, Guillaume; Sun, Hao

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 mDM ∼ 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 ∼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.

Citation

Banerjee, S., Boudjema, F., Chakrabarty, N., Chalons, G., & Sun, H. (2019). Relic density of dark matter in the inert doublet model beyond leading order: The heavy mass case. Physical Review D, 100(9), Article 095024. https://doi.org/10.1103/physrevd.100.095024

• Journal Article Type: Article
• Online Publication Date: Nov 25, 2019
• Publication Date: Nov 25, 2019
• Deposit Date: Nov 26, 2019
• Publicly Available Date: Nov 26, 2019
• Journal: Physical Review D
• Print ISSN: 2470-0010
• Electronic ISSN: 2470-0029
• Publisher: American Physical Society
• Peer Reviewed: Peer Reviewed
• Volume: 100
• Issue: 9
• Article Number: 095024
• DOI: https://doi.org/10.1103/physrevd.100.095024
• Public URL: https://durham-repository.worktribe.com/output/1282454