Observations Concerning the Magnitude of t \bar{t} Threshold Effects on Electroweak Parameters
High Energy Physics - Phenomenology
2009-10-28 v1
Abstract
We discuss a recent analysis of threshold effects and its implications for the determination of electroweak parameters. We show that the new formulation, when applied to the parameter for ~GeV, gives a result of similar magnitude to those previously obtained. In fact, it is quite close to our ``resonance'' calculation. We also present a simple estimate of the size of the threshold effects based on an elementary Bohr-atom model of resonances.
Cite
@article{arxiv.hep-ph/9401243,
title = {Observations Concerning the Magnitude of t \bar{t} Threshold Effects on Electroweak Parameters},
author = {Bernd A. Kniehl and Alberto Sirlin},
journal= {arXiv preprint arXiv:hep-ph/9401243},
year = {2009}
}
Comments
11 pages, latex, DESY 93-194, NYU-Th-93/12/01