Additional Fermion Families and Precision Electroweak Data
High Energy Physics - Phenomenology
2009-10-28 v1
Abstract
The S,T, and U formalism for studying electroweak precision data has recently been updated to include the effects of new light physics and within this analysis the latest LEP and SLC data tightly constrain models of physics beyond the Standard Model. We re-examine the constraints on additional strong and weakly interacting fermion families in the light of these developments. We conclude that the precision data favour models with at least one fermion with a mass below 150GeV.
Keywords
Cite
@article{arxiv.hep-ph/9408308,
title = {Additional Fermion Families and Precision Electroweak Data},
author = {Nick Evans},
journal= {arXiv preprint arXiv:hep-ph/9408308},
year = {2009}
}
Comments
7 pages + 4 appended ps diags, SWAT-40