CP violating scalar Dark Matter
CP violating scalar Dark Matter
We study an extension of the Standard Model (SM) in which two copies of the SM scalar $SU(2)$ doublet which do not acquire a Vacuum Expectation Value (VEV), and hence are inert, are added to the scalar sector. We allow for CP-violation in the inert sector, where the lightest inert state is protected from decaying to SM particles through the conservation of a $Z_2$ symmetry. The lightest neutral particle from the inert sector, which has a mixed CP-charge due to CP-violation, is hence a Dark Matter (DM) candidate. We discuss the new regions of DM relic density opened up by CP-violation, and compare our results to the CP-conserving limit and the Inert Doublet Model (IDM). We constrain the parameter space of the CP-violating model using recent results from the Large Hadron Collider (LHC) and DM direct and indirect detection experiments.
hep-ph
Cordero-Cid, A.
18e7d36c-f706-46d9-869a-42e8faa4c823
Hernández-Sánchez, J.
949d6d0b-c5e3-4fae-a99c-818b6da1361b
Keus, V.
f56212de-96d7-4955-8c56-561910f7f167
King, S. F.
f8c616b7-0336-4046-a943-700af83a1538
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Rojas, D.
94c200a8-ca52-47f1-b05d-310dafb2f712
Sokołowska, D.
f8acd9da-3d5a-4bee-8671-45e6d0192a4b
5 December 2016
Cordero-Cid, A.
18e7d36c-f706-46d9-869a-42e8faa4c823
Hernández-Sánchez, J.
949d6d0b-c5e3-4fae-a99c-818b6da1361b
Keus, V.
f56212de-96d7-4955-8c56-561910f7f167
King, S. F.
f8c616b7-0336-4046-a943-700af83a1538
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Rojas, D.
94c200a8-ca52-47f1-b05d-310dafb2f712
Sokołowska, D.
f8acd9da-3d5a-4bee-8671-45e6d0192a4b
Cordero-Cid, A., Hernández-Sánchez, J., Keus, V., King, S. F., Moretti, S., Rojas, D. and Sokołowska, D.
(2016)
CP violating scalar Dark Matter.
Journal of High Energy Physics, 12, [14].
(doi:10.1007/JHEP12(2016)014).
Abstract
We study an extension of the Standard Model (SM) in which two copies of the SM scalar $SU(2)$ doublet which do not acquire a Vacuum Expectation Value (VEV), and hence are inert, are added to the scalar sector. We allow for CP-violation in the inert sector, where the lightest inert state is protected from decaying to SM particles through the conservation of a $Z_2$ symmetry. The lightest neutral particle from the inert sector, which has a mixed CP-charge due to CP-violation, is hence a Dark Matter (DM) candidate. We discuss the new regions of DM relic density opened up by CP-violation, and compare our results to the CP-conserving limit and the Inert Doublet Model (IDM). We constrain the parameter space of the CP-violating model using recent results from the Large Hadron Collider (LHC) and DM direct and indirect detection experiments.
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art_10.1007_JHEP12(2016)014
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More information
Accepted/In Press date: 17 November 2016
e-pub ahead of print date: 5 December 2016
Published date: 5 December 2016
Additional Information:
42 pages, 22 figures
Keywords:
hep-ph
Organisations:
Theory Group
Identifiers
Local EPrints ID: 410384
URI: http://eprints.soton.ac.uk/id/eprint/410384
ISSN: 1029-8479
PURE UUID: b910aa6b-76f4-403e-9006-74fe236aff84
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Date deposited: 07 Jun 2017 16:31
Last modified: 16 Mar 2024 03:34
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Contributors
Author:
A. Cordero-Cid
Author:
J. Hernández-Sánchez
Author:
V. Keus
Author:
D. Rojas
Author:
D. Sokołowska
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