Suppressing dimension five operators in general SU(5) models
| dc.contributor.author | Gomez, M. E. | en |
| dc.contributor.author | Rizos, J. | en |
| dc.contributor.author | Tamvakis, K. | en |
| dc.date.accessioned | 2015-11-24T18:34:31Z | |
| dc.date.available | 2015-11-24T18:34:31Z | |
| dc.identifier.issn | 0556-2821 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/16956 | |
| dc.rights | Default Licence | - |
| dc.subject | fermionic string formulation | en |
| dc.subject | infrared fixed-points | en |
| dc.subject | standard-like model | en |
| dc.subject | grand unification | en |
| dc.subject | proton decay | en |
| dc.subject | symmetry-breaking | en |
| dc.subject | unified theories | en |
| dc.subject | nucleon decay | en |
| dc.subject | supergravity | en |
| dc.subject | so(10) | en |
| dc.title | Suppressing dimension five operators in general SU(5) models | en |
| heal.abstract | We discuss dimension-5 operators in supersymmetric models containing extra hypercharge-1/3 color triplets. We derive a general formula relating the dimension-5 operator to the color-triplet mass matrix. We show that certain zeros in the triplet mass matrix together with some triplet coupling selection rules can lead to the elimination of dimension-5 operators. In particular we focus on SU(5) models and show that (a) dimension-5 operators can be eliminated in the standard SU(5) model by the introduction of an extra pair of 5 + (5) over bar Higgs representations with specific couplings, (b) flipped SU(5) models with extra 10 + <(10)over bar> Higgs representations are free of dimension-5 operators, and (c) flipped SU(5) models with extra 5 + (5) over bar and/or extra 10 + <(10)over bar> Higgs representations can be made free of dimension-5 operators for a textured form of the triplet mass matrix accompanied by constraints on the 5-plet couplings to matter. Our analysis is motivated by the recently put forward M-theory phenomenological framework that requires a strong string coupling and reintroduces the problem of eliminating dimension-5 operators. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://000077967300085 | - |
| heal.journalName | Physical Review D | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 1999 | - |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Επιστημών και Τεχνολογιών. Τμήμα Βιολογικών Εφαρμογών και Τεχνολογιών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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