Relic density of dark matter in the inert doublet model beyond leading order: The heavy mass case - Archive ouverte HAL
Article Dans Une Revue Physical Review D Année : 2019

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

Shankha Banerjee
  • Fonction : Auteur
Nabarun Chakrabarty
  • Fonction : Auteur
Hao Sun

Résumé

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.

Dates et versions

hal-02188064 , version 1 (18-07-2019)

Identifiants

Citer

Shankha Banerjee, Fawzi Boudjema, Nabarun Chakrabarty, Guillaume Chalons, Hao Sun. Relic density of dark matter in the inert doublet model beyond leading order: The heavy mass case. Physical Review D, 2019, 100 (9), pp.095024. ⟨10.1103/PhysRevD.100.095024⟩. ⟨hal-02188064⟩
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