The S parameter in a technicolour model with explicit chiral symmetry breaking
High Energy Physics - Phenomenology
2009-10-28 v1
Abstract
We derive the S parameter of the electroweak radiative corrections in a scaled-QCD technicolour and using a Nambu-Jona Lasinio model for hadronic low energy interactions. In this framework deviations from low energy QCD can be quantitatively deduced. We induce explicit chiral symmetry breaking in the NJL model through the current-quarks mass term. It is shown that the prediction for the S parameter can be sensitively reduced respect to the chiral prediction.
Cite
@article{arxiv.hep-ph/9408232,
title = {The S parameter in a technicolour model with explicit chiral symmetry breaking},
author = {E. Pallante},
journal= {arXiv preprint arXiv:hep-ph/9408232},
year = {2009}
}
Comments
10 pages (Latex), 3 postscript figures appended, preprint ROM2F/94/32