Open AccessGauge-Higgs Unification in Orbifold Models
Author(s) -
Claudio A. Scrucca,
Marco Serone,
L. Silvestrini,
Andrea Wulzer
Publication year - 2004
Publication title -
journal of high energy physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.998
H-Index - 261
eISSN - 1126-6708
pISSN - 1029-8479
DOI - 10.1088/1126-6708/2004/02/049
Subject(s) - orbifold , higgs boson , particle physics , electroweak interaction , physics , gauge boson , technicolor , electroweak scale , higgs field , higgs sector , standard model (mathematical formulation) , symmetry breaking , grand unified theory , supersymmetry , theoretical physics , gauge (firearms) , gauge theory , archaeology , history
Six-dimensional orbifold models where the Higgs field is identified with someinternal component of a gauge field are considered. We classify all possibleT^2/Z_N orbifold constructions based on a SU(3) electroweak gauge symmetry.Depending on the orbifold twist, models with two, one or zero Higgs doubletscan be obtained. Models with one Higgs doublet are particularly interestingbecause they lead to a prediction for the Higgs mass, which is twice the Wboson mass at leading order: m_H=2 m_W. The electroweak scale is quadraticallysensitive to the cut-off, but only through very specific localized operators.We study in detail the structure of these operators at one loop, and identify aclass of models where they do not destabilize the electroweak scale at theleading order. This provides a very promising framework to construct realisticand predictive models of electroweak symmetry breaking.Comment: 27 pages, uses axodraw.sty; v2: version to appear in JHE
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