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# CP violating scalar Dark Matter

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].

Record type: Article

## 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 \textit{inert}, are added to the scalar sector. We allow for CP-violation in the \textit{inert} sector, where the lightest \textit{inert} state is protected from decaying to SM particles through the conservation of a $Z_2$ symmetry. The lightest neutral particle from the \textit{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.

Other
pdf - Accepted Manuscript
Text
art_10.1007_JHEP12(2016)014 - Version of Record

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

## Catalogue record

Date deposited: 07 Jun 2017 16:31

## Contributors

Author: A. Cordero-Cid
Author: J. Hernández-Sánchez
Author: V. Keus
Author: S. F. King
Author: S. Moretti
Author: D. Rojas
Author: D. Sokołowska