Fourth quark-lepton generation and precision measurements
High Energy Physics - Phenomenology
2009-10-26 v2
Abstract
Precise measurements of Z-boson parameters and W-boson and t-quark masses put strong constraints on non SU(2) * U(1) singlet New Physics. We demonstrate that one extra generation passes electroweak constraints even when all new particle masses are well above their direct mass bounds.
Cite
@article{arxiv.0910.3100,
title = {Fourth quark-lepton generation and precision measurements},
author = {M. I. Vysotsky},
journal= {arXiv preprint arXiv:0910.3100},
year = {2009}
}
Comments
Comments: Presented at XXIst Rencontres de Blois "Windows on the Universe" 21-26 June 2009 in Blois, France and "Progress and Challenges in Flavour Physics" 29 Sep- 3 Oct 2009 in Primosten, Croatia, 4 pages, 3 figures. 2 references added