Precise calculation of MW, sin^2 theta_MSbar, and sin^2 theta_eff

Details Precise calculation of MW, sin^2 theta_MSbar, and sin^2 theta_eff Precise calculation of MW, sin^2 theta_MSbar, and sin^2 theta_eff

1996-11-19

arxiv.org/abs/hep-ph/9611363v1

Phys.Lett.B394:188-194,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, Latex, 3 tables

Scientific paper

10.1016/S0370-2693(96)01677-2

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.

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