The S parameter in a technicolour model with explicit chiral symmetry breaking


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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 with respect to the chiral prediction.
Originele taal-2English
Pagina's (van-tot)273-278
Aantal pagina's6
TijdschriftPhysics Letters B
Nummer van het tijdschrift1
StatusPublished - 26-jan-1995
Extern gepubliceerdJa

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