Four-loop singlet contribution to the electroweak ρ parameter

2005/04/30 by York Schröder, Y. Schroder, Matthias Steinhauser +1
Physics and Astronomy · #Cosmology and Gravitation Theories #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/j.physletb.2005.06.085

published as Phys.Lett. B622 (2005) 124-130 · 9 pages, minor changes to match published version, references added

openalex publication_date 2005/07/07 · arxiv created 2005/11/11 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We compute the four-loop contribution to the electroweak ρ parameter induced by the singlet diagrams of the Z-boson self-energy. The numerical impact on the weak mixing angle and the W-boson mass is small.

Citations

• High-precision epsilon expansions of single-mass-scale four-loop vacuum bubbles
• Radiative corrections in theSU(2)L×U(1)theory: A simple renormalization framework