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CP violating hW(+)W(-) coupling in the Standard Model and beyond

2021-01-26Journal article Open access
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dc.contributor.authorHuang, Da
dc.contributor.authorMorais, António P.
dc.contributor.authorSantos, Rui
dc.date.accessioned2021-05-03T11:05:24Z
dc.date.available2021-05-03T11:05:24Z
dc.date.issued2021-01-26
dc.description.abstractInspired by the recent development in determining the property of the observed Higgs boson, we explore the CP-violating (CPV) -cCPVhW+mu nu W</mml:mover>mu nu-/upsilon coupling in the Standard Model (SM) and beyond, where W-+/- mu nu and W</mml:mover>+/- mu nu denote the W-boson field strength and its dual. To begin with, we show that the leading-order SM contribution to this CPV vertex appears at two-loop level. By summing over the quark flavor indices in the two loop integrals analytically, we can estimate the order of the corresponding Wilson coefficient to be cCPVSM<mml:mo>similar to O<mml:mfenced close=")" open="(">10<mml:mo>-23</mml:mfenced>, which is obviously too small to be probed at the LHC and planned future colliders. Then we investigate this CPV hW(+)W(-) interaction in two Beyond the Standard Model benchmark models: the left-right model and the complex 2-Higgs doublet model (C2HDM). Unlike what happens for the SM, the dominant contributions in both models arise at the one-loop level, and the corresponding Wilson coefficient can be as large as of O(10(-9)) in the former model and of O(10(-3)) for the latter. In light of such a large CPV effect in the hW(+)W(-) coupling, we also give the formulae for the leading one-loop contribution to the related CPV hZZ effective operator in the complex 2-Higgs doublet model. The order of magnitude of the Wilson coefficients in the C2HDM may be within reach of the high-luminosity LHC or planned future colliders.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationHUANG, Da; MORAIS, António P.; SANTOS, Rui – CP violating hW(+)W(-) coupling in the Standard Model and beyond. Journal of High Energy Physics. ISSN 1029-8479. Vol. 2021, N.º 1 (2021), pp. 1-21pt_PT
dc.identifier.issn1029-8479
dc.identifier.urihttp://hdl.handle.net/10400.21/13268
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherSpringerpt_PT
dc.relationUIDB/04106/2020 - CIDMA through the FCTpt_PT
dc.relationUIDP/04106/2020 - CIDMA through the FCTpt_PT
dc.relationUIDB/00618/2020 - Chinese Academy of Sciences (CAS) Hundred-Talent Programpt_PT
dc.relationUIDP/00618/2020 - Chinese Academy of Sciences (CAS) Hundred-Talent Programpt_PT
dc.relationCERN/FISPAR/0002/2017 - Chinese Academy of Sciences (CAS) Hundred-Talent Programpt_PT
dc.relationCERN/FIS-PAR/0014/2019 - Chinese Academy of Sciences (CAS) Hundred-Talent Programpt_PT
dc.relationUMO-2015/18/M/ST2/0518 - HARMONIA projectpt_PT
dc.relationPTDC/FISPAR/31000/2017pt_PT
dc.relation.publisherversionhttps://link.springer.com/content/pdf/10.1007/JHEP01(2021)168.pdfpt_PT
dc.subjectBeyond Standard Modelpt_PT
dc.subjectCP violationpt_PT
dc.titleCP violating hW(+)W(-) coupling in the Standard Model and beyondpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage21pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage1pt_PT
oaire.citation.titleJournal of High Energy Physicspt_PT
oaire.citation.volume2021
person.familyNamede Aguiar e Pestana de Morais
person.familyNameSantos
person.givenNameAntónio
person.givenNameRui
person.identifier100360
person.identifier.ciencia-id051A-E553-68F5
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.orcid0000-0001-7141-8162
person.identifier.orcid0000-0002-7948-0355
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id10739338800
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationd71f55da-677d-4adc-8bd2-e5b86b9f8b36
relation.isAuthorOfPublicationf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isAuthorOfPublication.latestForDiscoveryd71f55da-677d-4adc-8bd2-e5b86b9f8b36

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