Threshold effects in grand unified string models

Leontaris, GK; Tracas, ND

dc.contributor.author	Leontaris, GK	en
dc.contributor.author	Tracas, ND	en
dc.date.accessioned	2014-03-01T01:09:06Z
dc.date.available	2014-03-01T01:09:06Z
dc.date.issued	1992	en
dc.identifier.issn	0370-2693	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/10843
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0013281413&partnerID=40&md5=153bc98288bacfd568acc8dc4e342896	en
dc.subject.classification	Physics, Multidisciplinary	en
dc.subject.other	3-GENERATION SUPERSTRING MODEL	en
dc.subject.other	COUPLING-CONSTANTS	en
dc.subject.other	SYMMETRY-BREAKING	en
dc.subject.other	GAUGE	en
dc.subject.other	UNIFICATION	en
dc.subject.other	RENORMALIZATION	en
dc.subject.other	SUPERGRAVITY	en
dc.subject.other	DEPENDENCE	en
dc.subject.other	GUTS	en
dc.title	Threshold effects in grand unified string models	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1992	en
heal.abstract	A common feature in most of the string derived models is the appearance of extra matter fields, beyond those needed for the standard model content, which usually become massive at various intermediate scales. In the present work we concentrate on the free fermionic string models based on the intermediate gauge symmetries SU(5) X U(1) and SU(4) X O(4) and investigate the effect on the low energy parameters due to the inclusion of threshold corrections introduced either by string massive states or states becoming massive close to the intermediate symmetry breaking scale.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics	en
dc.identifier.isi	ISI:A1992JP59800008	en
dc.identifier.volume	291	en
dc.identifier.issue	1-2	en
dc.identifier.spage	44	en
dc.identifier.epage	52	en