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One-loop corrections to the Higgs boson invisible decay in a complex singlet extension of the SM

dc.contributor.authorEgle, Felix
dc.contributor.authorMuhlleitner, Milada
dc.contributor.authorSantos, Rui
dc.contributor.authorViana, João
dc.date.accessioned2023-02-10T13:13:58Z
dc.date.available2023-02-10T13:13:58Z
dc.date.issued2022-11-28
dc.description.abstractThe search for dark matter (DM) at colliders is founded on the idea of looking for something invisible. There are searches based on production and decay processes where DM may reveal itself as missing energy. If nothing is found, our best tool to constrain the parameter space of many extensions of the Standard Model (SM) with a DM candidate is the Higgs boson. As the measurements of the Higgs couplings become increasingly precise, higher-order corrections will start to play a major role. The tree-level contribution to the invisible decay width provides information about the portal coupling. Higher-order corrections also give us access to other parameters from the dark sector of the Higgs potential that are not present in the tree-level amplitude. In this work we will focus on the complex singlet extension of the SM in the phase with a DM candidate. We calculate the one-loop electroweak corrections to the decay of the Higgs boson into two DM particles. We find that the corrections are stable and of the order of a few percent. The present measurement of the Higgs invisible branching ratio, BR(H→invisible)<0.11, already constrains the parameter space of the model at leading order. We expect that by the end of the LHC the experimental measurement will require the inclusion of the electroweak corrections to the decay in order to match the experimental accuracy. Furthermore, the only competing process, which is direct detection, is shown to have a cross section below the neutrino floor.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationEGLE, Felix; MÜHLLEITNER, Margarete; SANTOS, Rui; VIANA, João – One-loop corrections to the Higgs boson invisible decay in a complex singlet extension of the SM. Physical Review D. ISSN 2470-0010. Vol. 106, N.º 9 (2022), pp. 1-22.pt_PT
dc.identifier.doi10.1103/PhysRevD.106.095030pt_PT
dc.identifier.eissn2470-0029
dc.identifier.issn2470-0010
dc.identifier.urihttp://hdl.handle.net/10400.21/15541
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Physical Societypt_PT
dc.relationCERN/FIS-PAR/ 0002/2017pt_PT
dc.relationCenter for Theoretical and Computational Physics
dc.relationCenter for Theoretical and Computational Physics
dc.relationFrom Higgs Phenomenology to the Unification of Fundamental Interactions
dc.relationStandard Model Extensions at the LHC
dc.relation.publisherversionhttps://journals.aps.org/prd/references/10.1103/PhysRevD.106.095030pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleOne-loop corrections to the Higgs boson invisible decay in a complex singlet extension of the SMpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCenter for Theoretical and Computational Physics
oaire.awardTitleCenter for Theoretical and Computational Physics
oaire.awardTitleFrom Higgs Phenomenology to the Unification of Fundamental Interactions
oaire.awardTitleStandard Model Extensions at the LHC
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00618%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F00618%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FFIS-PAR%2F31000%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/CERN%2FFIS-PAR%2F0014%2F2019/PT
oaire.citation.endPage22pt_PT
oaire.citation.issue9
oaire.citation.startPage1pt_PT
oaire.citation.titlePhysical Review Dpt_PT
oaire.citation.volume106pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
person.familyNameMuhlleitner
person.familyNameSantos
person.givenNameMilada Margarete
person.givenNameRui
person.identifier100360
person.identifier.ciencia-id131D-3C62-1A57
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.orcid0000-0003-3922-0281
person.identifier.orcid0000-0002-7948-0355
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id10739338800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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