English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We show that the pseudo Nambu--Goldstone boson contribution to thePeskin--Takeuchi electroweak parameter $S$ can be negative in a class oftechnicolor theories. This negative contribution can be large enough to cancelthe positive techni-hadron contribution, showing that electroweak precisiontests alone cannot be used to rule out technicolor as the mechanism ofelectroweak symmetry breaking.Comment: (LBL-32893, UCB-PTH 92/34, 10 pages; we added a discussion of  uncertainties, fine-tuning, and SU(2) asymptotic freedom; the conclusions are  unchanged.

Technicolor theories with negative values of the Peskin-Takeuchi electroweak parameterS