Journal of High Energy Physics | |
Re-derived overclosure bound for the inert doublet model | |
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