Singlet scalar and 2HDM extensions of the Standard Model : CP-violation and constraints from (g-2)(mu) and eEDM

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Keus , V , Koivunen , N & Tuominen , K 2018 , ' Singlet scalar and 2HDM extensions of the Standard Model : CP-violation and constraints from (g-2)(mu) and eEDM ' , Journal of High Energy Physics , vol. 2018 , no. 9 , 059 . https://doi.org/10.1007/JHEP09(2018)059

Title: Singlet scalar and 2HDM extensions of the Standard Model : CP-violation and constraints from (g-2)(mu) and eEDM
Author: Keus, Venus; Koivunen, Niko; Tuominen, Kimmo
Contributor organization: Department of Physics
Helsinki Institute of Physics
Teachers' Academy
Date: 2018-09-12
Language: eng
Number of pages: 47
Belongs to series: Journal of High Energy Physics
ISSN: 1029-8479
DOI: https://doi.org/10.1007/JHEP09(2018)059
URI: http://hdl.handle.net/10138/246614
Abstract: We study popular scalar extensions of the Standard Model, namely the singlet extension, the 2-Higgs doublet model (2HDM) and its extension by a singlet scalar. We focus on the contributions of the added scalars to the anomalous magnetic moment of the muon, (g - 2)(mu), in the presence of CP-violation, and the electric dipole moment of the electron (eEDM) in these models. In the absence of CP-violation, CP-even and CP-odd scalars contribute with an opposite sign to the anomalous magnetic moment of the muon and as a result these models generally require very light scalars to explain the observed discrepancy in (g - 2)(mu). We study the effect of CP-violation on the anomalous magnetic moment of the muon and its compatibility with the eEDM constraints. We show that given the current status of the global set of constraints applied on all values of cot beta, in the CP-violating scalar extensions, there exist no viable parameter space in agreement with both a(mu), and eEDM bounds.We study popular scalar extensions of the Standard Model, namely the singlet extension, the 2-Higgs doublet model (2HDM) and its extension by a singlet scalar. We focus on the contributions of the added scalars to the anomalous magnetic moment of the muon, (g - 2)(mu), in the presence of CP-violation, and the electric dipole moment of the electron (eEDM) in these models. In the absence of CP-violation, CP-even and CP-odd scalars contribute with an opposite sign to the anomalous magnetic moment of the muon and as a result these models generally require very light scalars to explain the observed discrepancy in (g - 2)(mu). We study the effect of CP-violation on the anomalous magnetic moment of the muon and its compatibility with the eEDM constraints. We show that given the current status of the global set of constraints applied on all values of cot beta, in the CP-violating scalar extensions, there exist no viable parameter space in agreement with both a(mu), and eEDM bounds.We study popular scalar extensions of the Standard Model, namely the singlet extension, the 2-Higgs doublet model (2HDM) and its extension by a singlet scalar. We focus on the contributions of the added scalars to the anomalous magnetic moment of the muon, (g - 2)(mu), in the presence of CP-violation, and the electric dipole moment of the electron (eEDM) in these models. In the absence of CP-violation, CP-even and CP-odd scalars contribute with an opposite sign to the anomalous magnetic moment of the muon and as a result these models generally require very light scalars to explain the observed discrepancy in (g - 2)(mu). We study the effect of CP-violation on the anomalous magnetic moment of the muon and its compatibility with the eEDM constraints. We show that given the current status of the global set of constraints applied on all values of cot beta, in the CP-violating scalar extensions, there exist no viable parameter space in agreement with both a(mu), and eEDM bounds.
Subject: 114 Physical sciences
Beyond Standard Model
CP violation
Higgs Physics
Peer reviewed: Yes
Rights: cc_by
Usage restriction: openAccess
Self-archived version: publishedVersion


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