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.
1-12
Cordero-Cid, A.
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Hernández-Sánchez, J.
90e11490-dfe6-4e88-b5eb-2b213ffc7f61
Keus, V.
f56212de-96d7-4955-8c56-561910f7f167
Moretti, S.
b57cf0f0-4bc3-4e02-96e3-071255366614
Rojas, D.
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Sokołowska, D.
f8acd9da-3d5a-4bee-8671-45e6d0192a4b
17 February 2020
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), , [135].
(doi:10.1140/epjc/s10052-020-7689-0).
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
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Accepted/In Press date: 28 January 2020
e-pub ahead of print date: 17 February 2020
Published date: 17 February 2020
Additional Information:
Funding Information:
The authors would like to thank Stephen F. King for numerous useful discussions. SM acknowledges support from the STFC Consolidated grant ST/L000296/1 and is financed in part through the NExT Institute. SM and VK acknowledge the H2020-MSCA-RISE-2014 grant no. 645722 (NonMinimalHiggs). DS is supported in part by the National Science Center, Poland, through the HARMONIA project under contract UMO-2015/18/M/ST2/00518. JH-S, DR and AC are supported by CONACYT (México), VIEP-BUAP and PRODEP-SEP (México) under the grant: “Red Temática: Física del Higgs y del Sabor”. SM and AC thankfully acknowledge computer resources provided by Laboratorio Nacional de Supercomputo del Sureste de Mexico (LNS), a member of the CONACYT national laboratories, with Project No. 201803024C.
Publisher Copyright:
© 2020, The Author(s).
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: 17 Mar 2024 02:58
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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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