Precision measurements, extra quark-lepton generations and 50 GeV neutrinos
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
The existence of extra chiral generations with all fermions heavier than is strongly disfavored by the precision electroweak data. However the data still allow a few extra generations if the neutral leptons have masses close to 50 GeV. Such heavy neutrino can be searched in the reaction . Existence of 50 GeV neutrinos makes standard model Higgs boson invisible.
Keywords
Cite
@article{arxiv.hep-ph/0106261,
title = {Precision measurements, extra quark-lepton generations and 50 GeV neutrinos},
author = {V. Novikov},
journal= {arXiv preprint arXiv:hep-ph/0106261},
year = {2007}
}
Comments
11 pages, 4 figures. Talk at Les Rencontres de Physique de la Vallee d'Aoste, 2001