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Testing scalar versus vector dark matter

2019-01-01Journal article Restricted access
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dc.contributor.authorAzevedo, Duarte
dc.contributor.authorDuch, Mateusz
dc.contributor.authorGrzadkowski, Bohdan
dc.contributor.authorHuang, Da
dc.contributor.authorIglicki, Michal
dc.contributor.authorSantos, Rui
dc.date.accessioned2022-03-04T10:38:14Z
dc.date.available2022-03-04T10:38:14Z
dc.date.issued2019-01-01
dc.description.abstractWe investigate and compare two simple models of dark matter (DM): a vector and a scalar DM model. Both models require the presence of two physical Higgs bosons h1 and h2 which come from mixed components of the standard Higgs doublet H and a complex singlet S. In the vector model, the extra Uð1Þ symmetry is spontaneously broken by the vacuum of the complex field S. This leads to a massive gauge boson Xμ that is a DM candidate stabilized by the dark charge conjugation symmetry S → S , Xμ → −Xμ. On the other hand, in the scalar model the gauge group remains the standard one. The DM field A is the imaginary component of S and the stabilizing symmetry is also the dark charge conjugation S → S (A → −A). In this case, in order to avoid spontaneous breaking, the Uð1Þ symmetry is broken explicitly, but softly, in the scalar potential. The possibility to disentangle the two models has been investigated. We have analyzed collider, cosmological, DM direct and indirect detection constraints and shown that there are regions in the space spanned by the mass of the nonstandard Higgs boson and the mass of the DM particle where the experimental bounds exclude one of the models. We have also considered possibility to disentangle the models at eþe− collider and concluded that the process eþe− → Z þ DM provides a useful tool to distinguish the models.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationAZEVEDO, D.; [et al] – Testing scalar versus vector dark matter. Physical Review D. ISSN 1550-7998. Vol. 99, N.º 1 (2019), pp. 015017-1- 015017-21.pt_PT
dc.identifier.doi10.1103/PhysRevD.99.015017pt_PT
dc.identifier.issn1550-7998
dc.identifier.urihttp://hdl.handle.net/10400.21/14374
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAmerican Physical Societypt_PT
dc.relation.publisherversionhttps://journals.aps.org/prd/pdf/10.1103/PhysRevD.99.015017pt_PT
dc.subjectDark matterpt_PT
dc.subjectVectorpt_PT
dc.subjectScalarpt_PT
dc.subjectPhysical Higgs bosonspt_PT
dc.titleTesting scalar versus vector dark matterpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage015017-21pt_PT
oaire.citation.issue1pt_PT
oaire.citation.startPage015017-1pt_PT
oaire.citation.titlePhysical Review Dpt_PT
oaire.citation.volume99pt_PT
person.familyNameAzevedo
person.familyNameDuch
person.familyNameGrzadkowski
person.familyNameSantos
person.givenNameDuarte
person.givenNameMateusz
person.givenNameBohdan
person.givenNameRui
person.identifier100360
person.identifier.ciencia-idEE1E-B7A4-FD9A
person.identifier.ciencia-id5A1A-5794-6DC2
person.identifier.orcid0000-0002-2647-1893
person.identifier.orcid0000-0002-9361-1067
person.identifier.orcid0000-0001-9980-6335
person.identifier.orcid0000-0002-7948-0355
person.identifier.ridF-1956-2010
person.identifier.scopus-author-id7006224664
person.identifier.scopus-author-id10739338800
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublicationd07d750f-a9d9-4a53-b720-cfc3f3a2d7ad
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relation.isAuthorOfPublicationf972a9bd-1bdd-4a47-8d1e-94e9595eddc0
relation.isAuthorOfPublication.latestForDiscoveryf972a9bd-1bdd-4a47-8d1e-94e9595eddc0

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