Oblique Corrections from Higgsless Models in Warped Space

Details Oblique Corrections from Higgsless Models in Warped Space Oblique Corrections from Higgsless Models in Warped Space

Publishing date

2004-01-22

URL

arxiv.org/abs/hep-ph/0401160v1

Journals

Phys.Rev.D70:075014,2004

Science

Physics

Field

High Energy Physics

SubField

High Energy Physics - Phenomenology

Additional info

18 pages, LaTeX, 2 figures included

Type

Scientific paper

Digital Object Identifier

10.1103/PhysRevD.70.075014

Abstract

We calculate the tree-level oblique corrections to electroweak precision observables generated in higgless models of electroweak symmetry breaking with a 5D SU(2)_L x SU(2)_R x U(1)_{B-L} gauge group on a warped background. In the absence of brane induced kinetic terms (and equal left and right gauge couplings) we find the S parameter to be ~1.15, while T,U~0, as in technicolor theories. Planck brane induced kinetic terms and unequal left-right couplings can lower S, however for sufficiently low values of S tree-level unitarity will be lost. A kinetic term localized on the TeV brane for SU(2)_D will generically increase S, however an induced kinetic term for U(1)_{B-L} on the TeV brane will lower S. With an appropriate choice of the value of this induced kinetic term S~0 can be achieved. In this case the mass of the lowest Z' mode will be lowered to about ~300 GeV.

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