Higgs-mass dependence of the effective electroweak mixing angle $\sin^2θ_{eff}$ at the two-loop level
arXiv:hep-ph/0509302 · doi:10.1016/j.physletb.2005.11.032
Abstract
The result for the Higgs-dependent electroweak two-loop bosonic contributions to the effective leptonic mixing angle of the $Z$-boson in the Standard Model is presented. Together with the previously calculated fermionic contributions it yields the complete dependence of $\sin^2θ_{\rm eff}$ on the Higgs-boson mass $M_H$. Compared to the fermionic contributions, the bosonic contributions are found to be smaller and have the opposite sign, compensating part of the fermionic contributions.
8 pages, 2 figures, 2 tables