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CPT and Lorentz Violation in the Photon and Z-Boson Sector

dc.contributor.authorColladay, Donald
dc.contributor.authorNoordmans, Jacob
dc.contributor.authorPotting, Robertus
dc.date.accessioned2018-12-07T14:57:55Z
dc.date.available2018-12-07T14:57:55Z
dc.date.issued2017-11
dc.description.abstractViolation of CPT and Lorentz symmetry in the photon sector is described within the minimal Standard-Model Extension by a dimension-3 Chern-Simons-like operator parametrized by a four-vector parameter k(AF) that has been very tightly bounded by astrophysical observations. On the other hand, in the context of the SU (2) x U (1) electroweak gauge sector of the Standard-Model Extension, CPT and Lorentz violation is described similarly, by dimension-3 operators parametrized by four-vector parameters k(1) and k(2). In this work, we investigate in detail the effects of the resulting CPT and Lorentz violation in the photon and Z-boson sectors upon electroweak-symmetry breaking. In particular, we show that, for the photon sector, the relevant Lorentz-violating effects are described at the lowest order by the kAF term, but that there are higher-order momentum-dependent effects due to photon-Z boson mixing. As bounds on CPT and Lorentz violation in the Z sector are relatively weak, these effects could be important phenomenologically. We investigate these effects in detail in this work.
dc.description.sponsorshipFundacao para a Ciencia e a Tecnologia of Portugal (FCT) [UID/FIS/00099/2013, SFRH/BPD/101403/2014, POPH/FSE]; New College of Florida, Sarasota, Florida, U.S.A.
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doi10.3390/sym9110248
dc.identifier.issn2073-8994
dc.identifier.urihttp://hdl.handle.net/10400.1/11764
dc.language.isoeng
dc.peerreviewedyes
dc.publisherMDPI Ag
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectStandard model
dc.subjectStrings
dc.titleCPT and Lorentz Violation in the Photon and Z-Boson Sector
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FFIS%2F00099%2F2013/PT
oaire.citation.issue11
oaire.citation.startPage248
oaire.citation.titleSymmetry-Basel
oaire.citation.volume9
oaire.fundingStream5876
person.familyNameNoordmans
person.familyNamePotting
person.givenNameJacob
person.givenNameRobertus
person.identifier.ciencia-id2918-1063-F874
person.identifier.orcid0000-0002-3778-9258
person.identifier.orcid0000-0001-6915-3994
person.identifier.ridK-8704-2015
person.identifier.scopus-author-id7003735743
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccess
rcaap.typearticle
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relation.isAuthorOfPublication.latestForDiscovery549a9237-c195-47df-a561-13a29464ceb9
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