Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2004-01-23
Phys.Rev.D70:015010,2004
Physics
High Energy Physics
High Energy Physics - Phenomenology
18 pages, 8 figures;note added
Scientific paper
10.1103/PhysRevD.70.015010
We study the dynamical symmetry breaking in the gauge-Higgs unification of the 5D theory compactified on an orbifold, $S^1/Z_2$. This theory identifies Wilson line degrees of freedoms as ``Higgs doublets''. We consider $SU(3)_c \times SU(3)_W$ and SU(6) models with the compactification scale of order a few TeV. The gauge symmetries are reduced to $SU(3)_c \times SU(2)_L \times U(1)_Y$ and $SU(3)_c \times SU(2)_L \times U(1)_Y \times U(1)$, respectively, through the orbifolding boundary conditions. We estimate the one loop effective potential of ``Higgs doublets'', and find that the electro-weak breaking is realized through the radiative corrections when there are suitable numbers of bulk fields possessing the suitable representations. The masses of ``Higgs doublets'' are ${\mathcal O}(100)$ GeV in this scenario.
Haba Naoyuki
Hosotani Yutaka
Kawamura Yoshiharu
Yamashita Toshifumi
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