The effective electroweak mixing angle $\sin^2θ_{eff}$ with two-loop bosonic contributions

Hollik, W.; Meier, U.; Uccirati, S.

The effective electroweak mixing angle $\sin^2θ_{eff}$ with two-loop bosonic contributions

Authors

Hollik, W.

Meier, U.

Uccirati, S.

Description

We present the results for the full electroweak two-loop bosonic contributions to the effective leptonic mixing angle of the $Z$ boson, $\sin^2θ_{\rm eff}$, in the Standard Model. A method applied to extract collinear divergences from two-loop vertex-functions is described. Comparisons of our results with those from a recent previous calculation show complete agreement.
14 pages, 3 figures, 4 tables