The effective electroweak mixing angle $\sin^2\theta_{eff}$ with two-loop fermionic contributions
High Energy Physics - Phenomenology
2009-11-11 v2
Abstract
We present the results from a calculation of the full electroweak two-loop fermionic contributions to the effective leptonic mixing angle of the boson, , in the Standard Model. On-shell renormalization and analytic calculations are performed for the three-point vertex functions at zero external momenta, whereas irreducible three-point integrals for non-vanishing external momenta are evaluated semi-analytically applying two different methods. Comparisons with a previous calculation show complete agreement.
Cite
@article{arxiv.hep-ph/0507158,
title = {The effective electroweak mixing angle $\sin^2\theta_{eff}$ with two-loop fermionic contributions},
author = {W. Hollik and U. Meier and S. Uccirati},
journal= {arXiv preprint arXiv:hep-ph/0507158},
year = {2009}
}
Comments
15 pages, 5 figures, reference added, few typos corrected