Dark matter with two inert doublets plus one Higgs doublet

作者：Keus Venus^*; King Stephen F; Moretti Stefano; Sokolowska Dorota

来源：The Journal of High Energy Physics, 2014, 2014(11): 016.

DOI：10.1007/JHEP11(2014)016

• Beyond Standard Model
• Cosmology of Theories beyond the SM
• Discrete and Finite Symmetries

Following the discovery of a Higgs boson, there has been renewed interest in the general 2-Higgs-Doublet Model (2HDM). A model with One Inert Doublet plus One Higgs Doublet (I(1+1) HDM), where one of the scalar doublets is %26quot;inert%26quot; (since it has no vacuum expectation value and does not couple to fermions) has an advantage over the 2HDM since it provides a good Dark Matter (DM) candidate, namely the lightest inert scalar. Motivated by the existence of three fermion families, here we consider a model with two scalar doublets plus one Higgs doublet (I(2+1) HDM), where the two scalar doublets are inert. The I(2+1) HDM has a richer phenomenology than either the I(1+1) HDM or the 2HDM. We discuss the new regions of DM relic density in the I(2+1) HDM with simplified couplings and address the possibility of constraining the model using recent results from the Large Hadron Collider (LHC) and DM direct detection experiments.

• 出版日期2014-11-5