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

W. Hollik·U. Meier·S. Uccirati
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Abstract

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.

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W. Hollik, U. Meier, S. Uccirati. 2007-01-16. The effective electroweak mixing angle $\sin^2θ_{eff}$ with two-loop bosonic contributions. https://doi.org/10.1016/j.nuclphysb.2006.12.001

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