2005/04/30 by Mu–Chun Chen, Mu-Chun Chen, Sally Dawson +2 · 2 citations
Physics and Astronomy · #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Electroweak interaction #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #hep-ph
paper · pdf · doi:10.1142/s0217751x0603388x
published as Int.J.Mod.Phys.A21:4045-4070,2006 · 25 pages, 8 figures, RevTeX; v2: typos corrected, reference added; v3: published version
arxiv created 2006/07/26 · openalex publication_date 2006/08/10 · arxiv updated 2014/11/17 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Electroweak precision data have been extensively used to constrain models containing physics beyond that of the Standard Model (SM). When the model contains Higgs scalars in representations other than singlets or doublets, and hence ρ≠1 at tree-level, a correct renormalization scheme requires more inputs than the three commonly used for the SM case. In such cases, the one-loop electroweak results cannot be split into a SM contribution plus a piece which vanishes as the scale of new physics becomes much larger than M W . We illustrate our results by presenting the dependence of M W on the top-quark mass in a model with a Higgs triplet and in the SU (2) L × SU (2) R left–right symmetric model. In these models, the allowed range for the lightest neutral Higgs mass can be as large as a few TeV.