Constraining vectors and axial-vectors in walking technicolor by a holographic principle

Holographic Construction of Technicolor Theory

We construct a dual description of technicolor theory based on the D4/D8 brane configuration. A strongly-coupled technicolor theory is identified as the effective theory on D-branes, and from the gauge/gravity correspondence, we explore the weakly-coupled holographic description of dynamical electroweak symmetry breaking. It is found from the D-brane probe action that the masses of W and Z boso...

Admissible Vectors of a Covariant Representation of a Dynamical System

In this paper, we introduce admissible vectors of covariant representations of a dynamical system which are extensions of the usual ones, and compare them with each other. Also, we give some sufficient conditions for a vector to be admissible vector of a covariant pair of a dynamical system.  In addition, we show the existence of Parseval frames for some special subspaces of $L^2(G)$ related to...

MCRG Minimal Walking Technicolor

Composite Scalars at LEP: Constraining Technicolor Theories

LEP I and LEP II data can be used to constrain technicolor models with light, neutral pseudo-NambuGoldstone bosons, P. We use published limits on branching ratios and cross sections for final states with photons, large missing energy, jet pairs, or bb pairs to constrain the anomalous PZZ, PZγ, and Pγγ couplings. From these results, we derive bounds on the size of the technicolor gauge group and...

The S-parameter in Holographic Technicolor Models

We study the S parameter, considering especially its sign, in models of electroweak symmetry breaking (EWSB) in extra dimensions, with fermions localized near the UV brane. Such models are conjectured to be dual to 4D strong dynamics triggering EWSB. The motivation for such a study is that a negative value of S can significantly ameliorate the constraints from electroweak precision data on thes...