We present all order results for the heavy top corrections to the \rho parameter in the complex mass scheme. We derive translation formulas between the complex mass and the on-shell scheme and show that they are ultimately equivalent. We show that a naive treatment with a fixed width for the top quark cannot give even approximately correct results.
@article{arxiv.1101.3166,
title = {Resummed corrections to the \rho parameter in the complex mass scheme},
author = {D. Bettinelli and J. J. van der Bij},
journal= {arXiv preprint arXiv:1101.3166},
year = {2011}
}
Comments
12 pages, 1 figure, to be published in Phys. Lett. B