A precision constraint on multi-Higgs-doublet models
High Energy Physics - Phenomenology
2008-11-26 v2
Abstract
We derive a general expression for Delta rho (or, equivalently, for the oblique parameter T) in the SU(2) x U(1) electroweak model with an arbitrary number of scalar SU(2) doublets, with hypercharge +-1/2, and an arbitrary number of scalar SU(2) singlets. The experimental bound on Delta rho constitutes a strong constraint on the masses and mixings of the scalar particles in that model.
Cite
@article{arxiv.0711.4022,
title = {A precision constraint on multi-Higgs-doublet models},
author = {W. Grimus and L. Lavoura and O. M. Ogreid and P. Osland},
journal= {arXiv preprint arXiv:0711.4022},
year = {2008}
}
Comments
19 pages, 2 figures, part of the introduction rewritten, small changes in the bibliography, one reference added