{ "id": "hep-ph/0605293", "version": "v3", "published": "2006-05-26T19:58:48.000Z", "updated": "2007-02-13T19:31:33.000Z", "title": "Dimension-Five Operators in Grand Unified Theories", "authors": [ "Joshua Sayre", "Soren Wiesenfeldt", "Scott Willenbrock" ], "comment": "4 pages, v3: version to appear in PRD", "journal": "Phys.Rev.D75:037702,2007", "doi": "10.1103/PhysRevD.75.037702", "categories": [ "hep-ph" ], "abstract": "Extensions of the standard model with low-energy supersymmetry generically allow baryon- and lepton-number violating operators of dimension four and five, yielding rapid proton decay. The dimension-four operators are usually forbidden by matter parity. We investigate to what extent the appearance of dimension-five operators at the Planck scale may be constrained by the different grand-unified gauge groups. Dimension-five operators are suppressed in models based on E_6 and SU(3)_C x SU(3)_L x SU(3)_R, where four matter fields do not form a gauge singlet. An intermediate scale offers the possibility to sufficiently suppress these dimension-five operators.", "revisions": [ { "version": "v3", "updated": "2007-02-13T19:31:33.000Z" } ], "analyses": { "subjects": [ "12.60.Jv", "12.10.Dm" ], "keywords": [ "dimension-five operators", "grand unified theories", "intermediate scale offers", "yielding rapid proton decay", "low-energy supersymmetry" ], "tags": [ "journal article" ], "publication": { "publisher": "APS", "journal": "Phys. Rev. D" }, "note": { "typesetting": "TeX", "pages": 4, "language": "en", "license": "arXiv", "status": "editable", "inspire": 717795 } } }