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Lepton collider indirect signatures of dark CP-violation

Lepton collider indirect signatures of dark CP-violation
Lepton collider indirect signatures of dark CP-violation
We study an extension of the Standard Model (SM) in which two copies of the SM Higgs doublet are added to the scalar sector. These extra doublets do not develop a vacuum expectation value, hence, they are inert. This essentially leads to a 3-Higgs Doublet Model (3HDM) with 2 inert and 1 active scalar doublets, which we denote as I(2+1)HDM. 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 Z2 symmetry, so that it is a Dark Matter (DM) candidate. For this scenario, we identify a smoking gun signature of dark CP-violation in the form of production thresholds of pairs of inert neutral Higgs bosons at an e+e− collider.
1434-6044
1-12
Cordero-Cid, A.
18e7d36c-f706-46d9-869a-42e8faa4c823
Hernández-Sánchez, J.
90e11490-dfe6-4e88-b5eb-2b213ffc7f61
Keus, V.
f56212de-96d7-4955-8c56-561910f7f167
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Rojas, D.
55118d87-8b05-48de-bcfc-a3d7bb7c13b4
Sokołowska, D.
f8acd9da-3d5a-4bee-8671-45e6d0192a4b
Cordero-Cid, A.
18e7d36c-f706-46d9-869a-42e8faa4c823
Hernández-Sánchez, J.
90e11490-dfe6-4e88-b5eb-2b213ffc7f61
Keus, V.
f56212de-96d7-4955-8c56-561910f7f167
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Rojas, D.
55118d87-8b05-48de-bcfc-a3d7bb7c13b4
Sokołowska, D.
f8acd9da-3d5a-4bee-8671-45e6d0192a4b

Cordero-Cid, A., Hernández-Sánchez, J., Keus, V., Moretti, S., Rojas, D. and Sokołowska, D. (2020) Lepton collider indirect signatures of dark CP-violation. The European Physical Journal C, 80 (2), 1-12, [135]. (doi:10.1140/epjc/s10052-020-7689-0).

Record type: Article

Abstract

We study an extension of the Standard Model (SM) in which two copies of the SM Higgs doublet are added to the scalar sector. These extra doublets do not develop a vacuum expectation value, hence, they are inert. This essentially leads to a 3-Higgs Doublet Model (3HDM) with 2 inert and 1 active scalar doublets, which we denote as I(2+1)HDM. 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 Z2 symmetry, so that it is a Dark Matter (DM) candidate. For this scenario, we identify a smoking gun signature of dark CP-violation in the form of production thresholds of pairs of inert neutral Higgs bosons at an e+e− collider.

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Cordero-Cid 2020 Article Lepton Collider Indirect Signatures - Version of Record
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Accepted/In Press date: 28 January 2020
e-pub ahead of print date: 17 February 2020

Identifiers

Local EPrints ID: 438169
URI: http://eprints.soton.ac.uk/id/eprint/438169
ISSN: 1434-6044
PURE UUID: 453720f1-0ce8-4130-9c24-aeed2135bde4

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Date deposited: 03 Mar 2020 17:45
Last modified: 25 Nov 2021 20:32

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Contributors

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

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