Two-loop electroweak contributions to Δr

2001/01/23 by A. Freitas, Freitas, A., S. Heinemeyer +7
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph

paper · pdf · doi:10.48550/arxiv.hep-ph/0101260

14 pages, including 4 figures. Presented at the 5th International Symposium on Radiative Corrections, (RADCOR-2000), Carmel CA, USA, 11-15 September 2000

arxiv created 2001/01/23 · arxiv updated 2009/11/30

Abstract

A review is given on the quantum correction Δr in the W--Z mass correlation at the electroweak two-loop level, as derived from the calculation of the muon lifetime in the Standard Model. Exact results for Δr and the W-mass prediction including O(α²) corrections with fermion loops are presented and compared with previous results of a next-to-leading order expansion in the top-quark mass.

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