Re-derived overclosure bound for the inert doublet model

Journal of High Energy Physics

S. Biondini¹  M. Laine¹ 

[1] AEC, Institute for Theoretical Physics, University of Bern;

关键词: Cosmology of Theories beyond the SM;    Thermal Field Theory;    Effective Field Theories;    Resummation;   

DOI  :  10.1007/JHEP08(2017)047

来源: DOAJ

【 摘 要 】

Abstract We apply a formalism accounting for thermal effects (such as modified Sommerfeld effect; Salpeter correction; decohering scatterings; dissociation of bound states), to one of the simplest WIMP-like dark matter models, associated with an “inert” Higgs doublet. A broad temperature range T ∼ M/20 . . . M/104 is considered, stressing the importance and less-understood nature of late annihilation stages. Even though only weak interactions play a role, we find that resummed real and virtual corrections increase the tree-level overclosure bound by 1 . . . 18%, depending on quartic couplings and mass splittings.

【 授权许可】

Unknown