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Grand unified string models and low energy couplings

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dc.contributor.author Antoniadis, I en
dc.contributor.author Leontaris, GK en
dc.contributor.author Tracas, ND en
dc.date.accessioned 2014-03-01T01:41:14Z
dc.date.available 2014-03-01T01:41:14Z
dc.date.issued 1992 en
dc.identifier.issn 03702693 en
dc.identifier.uri https://dspace.lib.ntua.gr/xmlui/handle/123456789/23431
dc.relation.uri http://www.scopus.com/inward/record.url?eid=2-s2.0-0002218348&partnerID=40&md5=d9c8e242727e2b023745c9cca1837097 en
dc.title Grand unified string models and low energy couplings en
heal.type journalArticle en
heal.publicationDate 1992 en
heal.abstract Recent calculations have shown that the string unification scale is naturally about two orders of magnitude larger than a typical supersymmetric grand unification scale compatible with the latest LEP data on sin2θw and α3. Studying the evolution of the gauge couplings of the string derived models based on the SU(4)xSU(2)LxSU(2)R and SU(3)3 gauge groups, we examine the conditions that make consistent the high string unification scale with the low energy phenomenology. Assuming only the content of the minimal supersymmetric standard model below a reasonable grand unification scale, we derive the constraints on the string spectrum of the above models. en
heal.journalName Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics en
dc.identifier.volume 279 en
dc.identifier.issue 1-2 en
dc.identifier.spage 58 en
dc.identifier.epage 63 en


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