Precise calculation of MW,sin^2theta_MS , and sin2θefflept

The two-loop corrections are incorporated in the theoretical calculation of MW, , and sin2θefflept, as functions of MH. The analysis is carried out in a previously proposed 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 sin2θefflept leads to MH = 127−71+143GeV and MW = 80.367 ± 0.048 GeV, with small variations among the six calculations.