Higgs-mass dependence of the effective electroweak mixing angle $\sin^2θ_{eff}$ at the two-loop level

Details Higgs-mass dependence of the effective electroweak mixing angle $\sin^2θ_{eff}$ at the two-loop level Higgs-mass dependence of the effective electroweak mixing angle $\sin^2θ_{eff}$ at the two-loop level

2005-09-27

arxiv.org/abs/hep-ph/0509302v2

Phys.Lett. B632 (2006) 680-683

Physics

High Energy Physics

High Energy Physics - Phenomenology

8 pages, 2 figures, 2 tables

Scientific paper

10.1016/j.physletb.2005.11.032

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 $\sin^2\theta_{\rm eff}$ 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.

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