We study the dynamical symmetry breaking in the gauge-Higgs unification of the 5D N = 1 SUSY theory, compactified on an orbifold, S/Z2. This theory identifies Wilson line degrees of freedoms as “Higgs doublets”. We consider SU(3)c × SU(3)W and SU(6) models, in which the gauge symmetries are reduced to SU(3)c×SU(2)L×U(1)Y and SU(3)c×SU(2)L×U(1)Y ×U(1), respectively, through the orbifolding bound...

Dynamical breaking of the electroweak theory, i.e. technicolor, is an intriguing extension of the Standard Model. Recently new models have been proposed featuring walking dynamics for a very low number of techniflavors. These technicolor extensions are not ruled out by current precision measurements. Here I first motivate the idea of dynamical electroweak symmetry breaking and then summarize so...

The origin of mass must lie in physics beyond the Standard Model. Dynamical electroweak symmetry breaking models like technicolor can generate masses for the W and Z bosons. Providing the large top quark mass and large top-bottom mass splitting while keeping ∆ρ and flavor-changing neutral currents small requires new strong dynamics for the top and bottom quarks. In consequence, new particles ar...

It is investigated that a dynamical mechanism to generate a low mass fermion in Randall-Sundrum (RS) background. We consider a five-dimensional four-fermion interaction model with two kinds of bulk fermion fields and take all the mass scale in the five-dimensional spacetime at the Planck scale. Evaluating the effective potential of the induced four-dimensional model, I calculate the dynamically...

Pseudospin symmetry in nuclei is investigated considering the Dirac equation with a Lorentz structured Woods-Saxon potential. The isospin correlation of the energy splittings of pseudospin partners with the nuclear potential parameters is studied. We show that, in an isotopic chain, the pseudospin symmetry is better realized for neutrons than for protons. This behavior comes from balance effect...

A new dynamical symmetry breaking of SU(2)L ×U(1) caused by the combination of the axial-vector component and the fermion mass is found in electroweak theory. The masses of the W and the Z bosons are obtained to be mW = 1 2g mt and m 2 Z = ρmW/cos θW with ρ ≃ 1. They are in excellent agreement with data. The Fermi constant is determined to be GF = 1 2 √ 2m2t . Two fixed gauge fixing terms for W...

We propose “conformal supersymmetry breaking” models, which tightly relate the conformal breaking scale (i.e. R-symmetry breaking scale) and the supersymmetry breaking scale. The both scales are originated from the constant term in the superpotential through the common source of the R-symmetry breaking. We show that dynamical tuning between those mass scales significantly reduces the degree of ...

While this theory is simple and renormalizable, it has a number of shortcomings. First, while the theory can be constructed to accommodate the breaking of electroweak symmetry, it provides no explanation for it – one simply assumes that the potential is of the form in eqn. 2. In addition, in the absence of supersymmetry, quantum corrections to the Higgs mass are naturally of order the largest s...

We introduce a new confining force (μ-color) at TeV scale to dynamically generate a supersymmetry preserving mass scale which would replace the μ parameter in the minimal supersymmetric standard model (MSSM). We discuss the Higgs phenomenology and also the pattern of soft supersymmetry breaking parameters allowing the correct electroweak symmetry breaking within the μ-color model, which have qu...