Hypercharge-Universal Topcolor
High Energy Physics - Phenomenology
2008-11-26 v3
Abstract
We propose and discuss the phenomenology of a Topcolor-assisted Technicolor (TC2) model with a flavor-universal hypercharge sector. After discussing the symmetry breaking pattern and low-energy effective Lagrangian, we examine various experimental and theoretical constraints, finding that precision electroweak measurements yield the strongest bounds on the model. We perform a combined fit to all available -pole and LEP2 data and find that the goodness of fit for hypercharge-universal topcolor is comparable to that of the Standard Model. In contrast, TC2 models with a flavor non-universal hypercharge sectors are markedly disfavored by the data.
Cite
@article{arxiv.0711.1127,
title = {Hypercharge-Universal Topcolor},
author = {Felix Braam and Michael Flossdorf and R. Sekhar Chivukula and Stefano Di Chiara and Elizabeth H. Simmons},
journal= {arXiv preprint arXiv:0711.1127},
year = {2008}
}
Comments
21 pages, 11 eps figures, reference and clarifying remarks added