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g − 2Þμ in the 2HDM and slightly beyond: an updated view

2021-09-22Journal article Restricted access
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dc.contributor.authorFerreira, Pedro Miguel
dc.contributor.authorGonçalves, B. L.
dc.contributor.authorJoaquim, F. R.
dc.contributor.authorSher, Marc
dc.date.accessioned2021-10-29T09:24:49Z
dc.date.available2021-10-29T09:24:49Z
dc.date.issued2021-09-22
dc.description.abstractThe recent measurement of the muon g - 2 anomaly continues to defy a Standard Model explanation but can be accommodated within the framework of two-Higgs doublet models, although the pseudoscalar mass must be fairly light. If one further includes extra fermion content in the form of a generation of vectorlike leptons, the allowed parameter range that explains the anomaly is even further extended, and clashes with B-decay constraints may be avoided. We show how the muon magnetic moment anomaly can be fit within these models, under the assumption that the vectorlike leptons do not mix with the muon. We update previous analyses and include all theoretical and experimental constraints, including searches for extra scalars. It is shown that the inclusion of vectorlike fermions allows the lepton-specific and muon-specific models to perform much better in fitting the muon's g - 2. However, these fits do require the Yukawa coupling between the Higgs and the vectorlike leptons to be large, causing potential problems with perturbativity and unitarity, and thus, models in which the vectorlike leptons mix with the muon may be preferred.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFERREIRA, Pedro Miguel; [et al] – g − 2Þμ in the 2HDM and slightly beyond: an updated view. Physical Review D. ISSN 2470-0010. Vol. 104, N.º 5 (2021), pp. 1-9pt_PT
dc.identifier.doi10.1103/PhysRevD.104.053008pt_PT
dc.identifier.eissn2470-0029
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/10400.21/13939
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Physical Societypt_PT
dc.relationUIDB/00777/2020 - FCTpt_PT
dc.relationUIDP/00777/2020 - FCTpt_PT
dc.relationUIDB/00618/2020 - FCTpt_PT
dc.relationCERN/FIS-PAR/0004/2019 - FCTpt_PT
dc.relationCERN/FISPAR/0014/2019 - FCTpt_PT
dc.relationPTDC/FIS-PAR/29436/2017 - FCTpt_PT
dc.relationUMO2015/18/M/ST2/00518 - HARMONIA Projectpt_PT
dc.relationSFRH/BD/139165/2018 - FCT / European Commissionpt_PT
dc.relationPHY-1819575 - National Science Foundation (NSF)pt_PT
dc.subjectStandard model explanationpt_PT
dc.subjectTwo-Higgs doublet modelspt_PT
dc.subjectVectorlike leptonspt_PT
dc.subjectLepton-specific modelpt_PT
dc.subjectMuon-specific modelpt_PT
dc.titleg − 2Þμ in the 2HDM and slightly beyond: an updated viewpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage9pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titlePhysical Review Dpt_PT
oaire.citation.volume104pt_PT
person.familyNameFerreira
person.familyNameSher
person.givenNamePedro
person.givenNameMarc
person.identifier.ciencia-id2D19-C93D-023C
person.identifier.orcid0000-0002-9351-1074
person.identifier.orcid0000-0002-6303-2814
person.identifier.ridA-2852-2009
person.identifier.scopus-author-id7202018301
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc800f751-a67f-46d3-85af-10e44ba81896
relation.isAuthorOfPublicationcdd215a1-a31b-493c-8da3-c2da9133d324
relation.isAuthorOfPublication.latestForDiscoveryc800f751-a67f-46d3-85af-10e44ba81896

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