Precise calculation of MW, sin^2 theta_MSbar, and sin^2 theta_eff
High Energy Physics - Phenomenology
2008-11-26 v1
Abstract
The two-loop O(g^4 mt^2/mw^2) corrections are incorporated in the theoretical calculation of MW, sin^2 theta_MSbar(MZ), and sin^2 theta_eff, as functions of MH. The analysis is carried out in a previously proposed MSbar formulation and two novel on-shell resummation schemes. It is found that the inclusion of the new effects sharply decreases the scheme and residual scale dependence of the calculations. QCD corrections are incorporated in two different approaches. Comparison with the world average of sin^2 theta_eff leads to MH= 127 +143 -71 GeV and MW= 80.367 +/- 0.048 GeV, with small variations among the six calculations.
Keywords
Cite
@article{arxiv.hep-ph/9611363,
title = {Precise calculation of MW, sin^2 theta_MSbar, and sin^2 theta_eff},
author = {G. Degrassi and P. Gambino and A. Sirlin},
journal= {arXiv preprint arXiv:hep-ph/9611363},
year = {2008}
}
Comments
10 pages, Latex, 3 tables