On the Renormalization of the S Parameter
High Energy Physics - Phenomenology
2009-10-22 v1
Abstract
We calculate the S parameter of the standard model at one loop of fermions, using three different regularizations (dimensional, Pauli-Villars and lattice) and find an extra contribution to the S parameter besides the standard one for each case. This shows that the extra contribution recently reported for the lattice regularization is {\it not} necessarily tied to the non-decoupling effect of fermion doublers. We argue that the extra contribution should be subtracted in the renormalizable perturbative expansion.
Keywords
Cite
@article{arxiv.hep-ph/9204218,
title = {On the Renormalization of the S Parameter},
author = {Sinya Aoki},
journal= {arXiv preprint arXiv:hep-ph/9204218},
year = {2009}
}
Comments
8 pages