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arXiv · hep-ph/9204218

On the Renormalization of the S Parameter

Sinya Aoki
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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.

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Sinya Aoki. 1992-04-13. On the Renormalization of the S Parameter. https://doi.org/10.1016/0370-2693(92)91400-4

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