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Phenomenological comparison of models with extended Higgs sectors

2017-08-29Journal article Restricted access
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dc.contributor.authorMuehlleitner, Margarete
dc.contributor.authorSampaio, Marco O. P.
dc.contributor.authorSantos, Rui
dc.contributor.authorWittbrodt, Jonas
dc.date.accessioned2019-03-19T11:58:53Z
dc.date.available2019-03-19T11:58:53Z
dc.date.issued2017-08-29
dc.description.abstractBeyond the Standard Model (SM) extensions usually include extended Higgs sectors. Models with singlet or doublet fields are the simplest ones that are compatible with the rho parameter constraint. The discovery of new non-SM Higgs bosons and the identification of the underlying model requires dedicated Higgs properties analyses. In this paper, we compare several Higgs sectors featuring 3 CP-even neutral Higgs bosons that are also motivated by their simplicity and their ability to solve some of the flaws of the SM. They are: the SM extended by a complex singlet field (CxSM), the singlet extension of the 2-Higgs-Doublet Model (N2HDM), and the Next-to-Minimal Supersymmetric SM extension (NMSSM). In addition, we analyse the CP-violating 2-Higgs-Doublet Model (C2HDM), which provides 3 neutral Higgs bosons with a pseudoscalar admixture. This allows us to compare the effects of singlet and pseudoscalar admixtures. Through dedicated scans of the allowed parameter space of the models, we analyse the phenomenologically viable scenarios from the view point of the SM-like Higgs boson and of the signal rates of the non-SM-like Higgs bosons to be found. In particular, we analyse the effect of singlet/pseudoscalar admixture, and the potential to differentiate these models in the near future. This is supported by a study of couplings sums of the Higgs bosons to massive gauge bosons and to fermions, where we identify features that allow us to distinguish the models, in particular when only part of the Higgs spectrum is discovered. Our results can be taken as guidelines for future LHC data analyses, by the ATLAS and CMS experiments, to identify specific benchmark points aimed at revealing the underlying model.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationMUEHLLEITNER, Margarete; [et al] – Phenomenological comparison of models with extended Higgs sectors. Journal of High Energy Physics. ISSN 1029-8479. N.º 8 (2019), pp. 1-53pt_PT
dc.identifier.doi10.1007/JHEP08(2017)132pt_PT
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/10400.21/9735
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relation57128671 - DAAD project "PPP Portugal"pt_PT
dc.relationBPD/UI97/5528/2017pt_PT
dc.relation.publisherversionhttps://link.springer.com/content/pdf/10.1007%2FJHEP08%282017%29132.pdfpt_PT
dc.subjectBeyond Standard Modelpt_PT
dc.subjectHiggs physicspt_PT
dc.subjectCP violationpt_PT
dc.subjectSupersymmetric Standard Modelpt_PT
dc.titlePhenomenological comparison of models with extended Higgs sectorspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMAT%2F04106%2F2013/PT
oaire.citation.endPage53pt_PT
oaire.citation.issue8pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleJournal of High Energy Physicspt_PT
oaire.fundingStream5876
person.familyNameSantos
person.familyNameWittbrodt
person.givenNameRui
person.givenNameJonas
person.identifier100360
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.ciencia-id141D-934B-A074
person.identifier.orcid0000-0002-7948-0355
person.identifier.orcid0000-0002-2715-8671
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id10739338800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isAuthorOfPublication969daddf-6349-4190-ad86-18f85143c473
relation.isAuthorOfPublication.latestForDiscoveryf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isProjectOfPublication293e9e20-ac2e-465c-a0b0-5cdbd194b3d6
relation.isProjectOfPublication.latestForDiscovery293e9e20-ac2e-465c-a0b0-5cdbd194b3d6

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