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Dark Matter with Two Inert Doublets plus One Higgs Doublet

Dark Matter with Two Inert Doublets plus One Higgs Doublet
Dark Matter with Two Inert Doublets plus One Higgs Doublet
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 "inert" (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.
hep-ph
1029-8479
Keus, Venus
f56212de-96d7-4955-8c56-561910f7f167
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Sokolowska, Dorota
22a8f2fc-000d-4a70-a0c8-bb0982631654
Keus, Venus
f56212de-96d7-4955-8c56-561910f7f167
King, Stephen F.
f8c616b7-0336-4046-a943-700af83a1538
Moretti, Stefano
b57cf0f0-4bc3-4e02-96e3-071255366614
Sokolowska, Dorota
22a8f2fc-000d-4a70-a0c8-bb0982631654

Keus, Venus, King, Stephen F., Moretti, Stefano and Sokolowska, Dorota (2014) Dark Matter with Two Inert Doublets plus One Higgs Doublet. Journal of High Energy Physics. (doi:10.1007/JHEP11(2014)016).

Record type: Article

Abstract

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 "inert" (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.

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Published date: 5 November 2014
Keywords: hep-ph
Organisations: Theory Group

Identifiers

Local EPrints ID: 408838
URI: http://eprints.soton.ac.uk/id/eprint/408838
ISSN: 1029-8479
PURE UUID: 4159b9ca-7dcd-43c8-bbcb-cc7e45c550be

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Date deposited: 28 May 2017 04:03
Last modified: 04 Nov 2019 18:49

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