1992/09/30 by Markus A. Luty, Raman Sundrum · 3 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevlett.70.529
published as Phys.Rev.Lett.70:529,1993 · (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.)
arxiv created 1992/11/16 · openalex publication_date 1993/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We show that the pseudo Nambu-Goldstone boson contribution to the Peskin-Takeuchi electroweak parameter S can be negative in a class of technicolor theories. This negative contribution can be large enough to cancel the positive technihadron contribution, showing that electroweak precision tests alone cannot be used to rule out technicolor as the mechanism of electroweak symmetry breaking.