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

W. Hollik; U. Meier; S. Uccirati

doi:10.1016/j.physletb.2005.11.032

paper

Higgs-mass dependence of the effective electroweak mixing angle $sin^{2} θ_{e f f}$ 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 $sin^{2} θ_{eff}$ 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

Higgs-mass dependence of the effective electroweak mixing angle sin2θeff​ at the two-loop level

Abstract

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