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High scale impact in alignment and decoupling in two-Higgs-doublet models

2018-05-18Journal article Open access
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dc.contributor.authorBasler, Philipp
dc.contributor.authorFerreira, Pedro Miguel
dc.contributor.authorMuehlleitner, Milada Margarete
dc.contributor.authorSantos, Rui
dc.date.accessioned2018-11-30T15:09:15Z
dc.date.available2018-11-30T15:09:15Z
dc.date.issued2018-05-18
dc.description.abstractThe two-Higgs-doublet model (2HDM) provides an excellent benchmark to study physics beyond the Standard Model (SM). In this work, we discuss how the behavior of the model at high-energy scales causes it to have a scalar with properties very similar to those of the SM-which means the 2HDM can be seen to naturally favor a decoupling or alignment limit. For a type II 2HDM, we show that requiring the model to be theoretically valid up to a scale of 1 TeV, by studying the renormalization group equations (RGE) of the parameters of the model, causes a significant reduction in the allowed magnitude of the quartic couplings. This, combined with B-physics bounds, forces the model to be naturally decoupled. As a consequence, any nondecoupling limits in type II, like the wrong-sign scenario, are excluded. On the contrary, even with the very constraining limits for the Higgs couplings from the LHC, the type I model can deviate substantially from alignment. An RGE analysis similar to that made for type II shows, however, that requiring a single scalar to be heavier than about 500 GeV would be sufficient for the model to be decoupled. Finally, we show that the 2HDM is stable up to the Planck scale independently of which of the CP-even scalars is the discovered 125 GeV Higgs boson.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBASLER, Philipp; [et al] – High scale impact in alignment and decoupling in two-Higgs-doublet models . Physical Review D. ISSN 2470-0010. Vol. 97, N.º 9 (2018) pp. 1-21pt_PT
dc.identifier.doi10.1103/PhysRevD.97.095024pt_PT
dc.identifier.issn2470-0010
dc.identifier.issn2470-0029
dc.identifier.urihttp://hdl.handle.net/10400.21/9116
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Physical Societypt_PT
dc.relationMU 3138/1-1 - DFG project "Precision Calculations in the Higgs Sector-Paving the Way to the New Physics Landscape"pt_PT
dc.relationUMO-2015/18/M/ST2/00518 - HARMONIA projectpt_PT
dc.relation.publisherversionhttps://journals.aps.org/prd/pdf/10.1103/PhysRevD.97.095024pt_PT
dc.subjectTwo-Higgs-doublet modelpt_PT
dc.subjectStandard Modelpt_PT
dc.subjectRenormalization group equationspt_PT
dc.titleHigh scale impact in alignment and decoupling in two-Higgs-doublet modelspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage21pt_PT
oaire.citation.issue9pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titlePhysical Review Dpt_PT
oaire.citation.volume97pt_PT
person.familyNameBasler
person.familyNameFerreira
person.familyNameMuhlleitner
person.familyNameSantos
person.givenNamePhilipp
person.givenNamePedro
person.givenNameMilada Margarete
person.givenNameRui
person.identifier100360
person.identifier.ciencia-id2D19-C93D-023C
person.identifier.ciencia-id131D-3C62-1A57
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.orcid0000-0001-9638-3170
person.identifier.orcid0000-0002-9351-1074
person.identifier.orcid0000-0003-3922-0281
person.identifier.orcid0000-0002-7948-0355
person.identifier.ridA-2852-2009
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id7202018301
person.identifier.scopus-author-id10739338800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationc800f751-a67f-46d3-85af-10e44ba81896
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relation.isAuthorOfPublicationf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isAuthorOfPublication.latestForDiscoveryf972a9bd-1bdd-4a47-8d1e-94e9595eddc0

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