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Probing wrong-sign Yukawa couplings at the LHC and a future linear collider

2014-06Journal article Restricted access
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dc.contributor.authorFerreira, Pedro Miguel
dc.contributor.authorSantos, Rui
dc.contributor.authorGunion, John F.
dc.contributor.authorHaber, Howard
dc.date.accessioned2015-08-25T10:51:30Z
dc.date.available2015-08-25T10:51:30Z
dc.date.issued2014-06
dc.description.abstractWe consider the two-Higgs-doublet model as a framework in which to evaluate the viability of scenarios in which the sign of the coupling of the observed Higgs boson to down-type fermions (in particular, b-quark pairs) is opposite to that of the Standard Model (SM), while at the same time all other tree-level couplings are close to the SM values. We show that, whereas such a scenario is consistent with current LHC observations, both future running at the LHC and a future e(+)e(-) linear collider could determine the sign of the Higgs coupling to b-quark pairs. Discrimination is possible for two reasons. First, the interference between the b-quark and the t-quark loop contributions to the ggh coupling changes sign. Second, the charged-Higgs loop contribution to the gamma gamma h coupling is large and fairly constant up to the largest charged-Higgs mass allowed by tree-level unitarity bounds when the b-quark Yukawa coupling has the opposite sign from that of the SM (the change in sign of the interference terms between the b-quark loop and the W and t loops having negligible impact).por
dc.identifier.citationFERREIRA, Pedro Miguel Martins; [et al] – Probing wrong-sign Yukawa couplings at the LHC and a future linear collider. Physical Review D. ISSN: 1550-7998. Vol. 89, nr. 11 (2014), Art. nr. 115003por
dc.identifier.doi10.1103/PhysRevD.89.115003
dc.identifier.issn1550-7998
dc.identifier.issn1550-2368
dc.identifier.urihttp://hdl.handle.net/10400.21/4987
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherAmer Physical Societypor
dc.relation.ispartofseries115003
dc.subjectSupersymmetric Standard Modelpor
dc.subjectHiggs Doublet Modelpor
dc.subjectElectroweak Symmetry-Breakingpor
dc.subjectRadiative-Correctionspor
dc.subjectAtlas Detectorpor
dc.subjectMulti-Higgspor
dc.subjectTop-Quarkpor
dc.subjectBosonpor
dc.subjectMasspor
dc.subjectPhenomenologypor
dc.titleProbing wrong-sign Yukawa couplings at the LHC and a future linear colliderpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceUSApor
oaire.citation.issue11por
oaire.citation.titlePhysical Review Dpor
oaire.citation.volume89por
person.familyNameFerreira
person.familyNameSantos
person.familyNameHaber
person.givenNamePedro
person.givenNameRui
person.givenNameHoward
person.identifier100360
person.identifier.ciencia-id2D19-C93D-023C
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.ciencia-id7110-4319-D229
person.identifier.orcid0000-0002-9351-1074
person.identifier.orcid0000-0002-7948-0355
person.identifier.orcid0000-0001-7338-8104
person.identifier.ridA-2852-2009
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id7202018301
person.identifier.scopus-author-id10739338800
person.identifier.scopus-author-id7005412317
rcaap.rightsclosedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublicationc800f751-a67f-46d3-85af-10e44ba81896
relation.isAuthorOfPublicationf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isAuthorOfPublication434f58d9-4ca6-43dc-9bf3-ce04f308f145
relation.isAuthorOfPublication.latestForDiscovery434f58d9-4ca6-43dc-9bf3-ce04f308f145

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