Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM

The minimal supersymmetric standard model (MSSM) with complex parameters can contribute sizably to muon/electron anomalous magnetic dipole moment (g−2) and electric dipole moment (EDM). The electron g−2 interplays with electron EDM; the muon g−2 can also interplay with electron EDM assuming the univ...

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Autores principales:	Song Li, Yang Xiao, Jin Min Yang
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2022
Materias:	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
Acceso en línea:	https://doaj.org/article/3cf77f1b48034f2f943496a870c09650
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spelling	oai:doaj.org-article:3cf77f1b48034f2f943496a870c096502021-12-02T04:59:04ZConstraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM0550-321310.1016/j.nuclphysb.2021.115629https://doaj.org/article/3cf77f1b48034f2f943496a870c096502022-01-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S0550321321003266https://doaj.org/toc/0550-3213The minimal supersymmetric standard model (MSSM) with complex parameters can contribute sizably to muon/electron anomalous magnetic dipole moment (g−2) and electric dipole moment (EDM). The electron g−2 interplays with electron EDM; the muon g−2 can also interplay with electron EDM assuming the universality between smuon and selectron masses, either of which can constrain the relevant CP-phases in the MSSM. In this work, we first use such an interplay to derive an approximate analytical upper limit on the relevant CP-phase. Then we extensively scan the parameter space to obtain more accurate upper limits. We obtain the following observations: (i) The muon g−2 in the 2σ range combined with the electron EDM upper limit (assuming the universality between smuon and selectron masses) typically constrains the relevant CP-phase under 1.9×10−5(rad); (ii) The electron g−2 in the 2σ range (Berkeley) interplays with the electron EDM upper limit (without assuming the universality between smuon and selectron masses) constrains the relevant CP-phase under 3.9×10−6(rad) (also requiring muon g−2 in the allowed 2σ range). We also find some special cancellations in the parameter space which can relax the constraints by a couple of orders. Such stringent limits on CP-phases may pose a challenge for model building of SUSY, i.e., how to naturally suppress these phases.Song LiYang XiaoJin Min YangElsevierarticleNuclear and particle physics. Atomic energy. RadioactivityQC770-798ENNuclear Physics B, Vol 974, Iss , Pp 115629- (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798
spellingShingle	Nuclear and particle physics. Atomic energy. Radioactivity QC770-798 Song Li Yang Xiao Jin Min Yang Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM
description	The minimal supersymmetric standard model (MSSM) with complex parameters can contribute sizably to muon/electron anomalous magnetic dipole moment (g−2) and electric dipole moment (EDM). The electron g−2 interplays with electron EDM; the muon g−2 can also interplay with electron EDM assuming the universality between smuon and selectron masses, either of which can constrain the relevant CP-phases in the MSSM. In this work, we first use such an interplay to derive an approximate analytical upper limit on the relevant CP-phase. Then we extensively scan the parameter space to obtain more accurate upper limits. We obtain the following observations: (i) The muon g−2 in the 2σ range combined with the electron EDM upper limit (assuming the universality between smuon and selectron masses) typically constrains the relevant CP-phase under 1.9×10−5(rad); (ii) The electron g−2 in the 2σ range (Berkeley) interplays with the electron EDM upper limit (without assuming the universality between smuon and selectron masses) constrains the relevant CP-phase under 3.9×10−6(rad) (also requiring muon g−2 in the allowed 2σ range). We also find some special cancellations in the parameter space which can relax the constraints by a couple of orders. Such stringent limits on CP-phases may pose a challenge for model building of SUSY, i.e., how to naturally suppress these phases.
format	article
author	Song Li Yang Xiao Jin Min Yang
author_facet	Song Li Yang Xiao Jin Min Yang
author_sort	Song Li
title	Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM
title_short	Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM
title_full	Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM
title_fullStr	Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM
title_full_unstemmed	Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM
title_sort	constraining cp-phases in susy: an interplay of muon/electron g − 2 and electron edm
publisher	Elsevier
publishDate	2022
url	https://doaj.org/article/3cf77f1b48034f2f943496a870c09650
work_keys_str_mv	AT songli constrainingcpphasesinsusyaninterplayofmuonelectrong2andelectronedm AT yangxiao constrainingcpphasesinsusyaninterplayofmuonelectrong2andelectronedm AT jinminyang constrainingcpphasesinsusyaninterplayofmuonelectrong2andelectronedm
_version_	1718400883130105856

Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM

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Constraining CP-phases in SUSY: An interplay of muon/electron g − 2 and electron EDM