Grand unified string models and low energy couplings

Antoniadis, I; Leontaris, GK; Tracas, ND

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