Epsilon(b) constrainsts on self-couplings of vector bosons

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dc.contributor.authorÉboli, O. J P
dc.contributor.authorLietti, S. M.
dc.contributor.authorGonzalez-Garcia, M. C.
dc.contributor.authorNovaes, Sérgio Ferraz [UNESP]
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversity of Wisconsin
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-27T11:17:57Z
dc.date.available2014-05-27T11:17:57Z
dc.date.issued1994-12-01
dc.description.abstractWe analyze the constraints on possible anomalous contributions to the W+W-Z vertex coming from non-universal radiative corrections to the Z → bb̄ width. We parametrize these corrections in terms of ∈b and use the LEP data to establish the allowed values for the anomalous triple couplings. We examine all CP conserving effective operators that exhibit SU(2)L × U(1)Y gauge invariance and do not give any tree level contribution to the present experimental observables. For some of these operators our constraints are comparable with the bounds coming from a global fit of the oblique parameters, which evidences the increasing relevance of the precise measurement of the b-quark parameters at LEP for the search of new physics.en
dc.description.affiliationInstituto de Física Universidade de São Paulo, C.P. 20516, 01452-990 São Paulo
dc.description.affiliationPhysics Department University of Wisconsin, Madison, WI 53706
dc.description.affiliationInst. de Fis. Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo
dc.description.affiliationUnespInst. de Fis. Teórica Universidade Estadual Paulista, Rua Pamplona 145, 01405-900 São Paulo
dc.format.extent119-126
dc.identifierhttp://dx.doi.org/10.1016/0370-2693(94)91143-6
dc.identifier.citationPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, v. 339, n. 1-2, p. 119-126, 1994.
dc.identifier.doi10.1016/0370-2693(94)91143-6
dc.identifier.issn0370-2693
dc.identifier.scopus2-s2.0-0008132588
dc.identifier.urihttp://hdl.handle.net/11449/130708
dc.identifier.wosWOS:A1994PQ57300021
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
dc.relation.ispartofjcr4.254
dc.relation.ispartofsjr2,336
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.titleEpsilon(b) constrainsts on self-couplings of vector bosonsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0003-0471-8549[4]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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