Electroweak two-loop corrections to the effective weak mixing angle
By Malgorzata Awramik, Michal Czakon, Ayres Freitas. 2006
137 citations recorded by the source corpus.
Recently exact results for the complete electroweak two-loop contributions to the effective weak mixing angle were published. This paper illustrates the techniques used for this computation, in particular the methods for evaluating the loop diagrams and the proper definition of Z-pole observables at next-to-next-to-leading order. Numerical results are presented in terms of simple parametrization formulae and compared in detail with a previous result of an expansion up to next-to-leading order in the top-quark mass. Finally, an estimate of the remaining theoretical uncertainties from unknown higher-order corrections is given.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/e3111d86f4a8b50dc1dd4878cb807071e8ff7bf3
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In Nuclear and High Energy Physics
Citations in the corpus
- Electroweak precision observables, new physics and the nature of a 126 GeV Higgs boson (2013, background): “7 × 10−5 for the leptonic channels [80, 81], and we neglect it in the following.”
- Limiting two-Higgs-doublet models (2014, background): “The radiative corrections ∆r and ∆kl are known up to two-loop order, including some partial higher-order EW and QCD corrections [34, 35] (for a review of these corrections we refer the reader to [36]).”