6 papers · 1 filter
An Improved Determination of the Fermi Coupling Constant, G_F
Robin G. Stuart
Over 40 years after the calculation of the 1-loop QED corrections to the muon lifetime, new theoretical developments have made it possible to obtain an analytic expression for the…
Complete 2-loop quantum electrodynamic contributions to the muon lifetime in the Fermi model
Robin G. Stuart
The complete 2-loop QED contributions to the muon lifetime have been calculated analytically in the Fermi theory. The exact result for the effects of virtual and real photons, virt…
O(N_f alpha^2) Electromagnetic Charge Renormalization in the Standard Model
Paresh Malde, Robin G. Stuart
The O(N_f alpha^2) electroweak radiative corrections to the Thomson scattering matrix element are calculated for a general renormalization scheme with massless fermions. All integr…
Radiative Corrections in Low-Energy Electroweak Processes
Robin G. Stuart
Of the the three best-measured electroweak observables, , and , the first two are extracted from low-energy processes. Both and are now known to an accura…
Order Corrections in Low-Energy Electroweak Processes
R. Akhoury, Paresh Malde, Robin G. Stuart
We provide a compendium of techniques that can be used to compute corrections to low-energy electroweak processes. Specifically, these are the 2-loop electroweak correc…
Gauge Invariance in Boson Production
Robin G. Stuart
It is shown how to construct exactly gauge-invariant S-matrix elements for processes involving unstable gauge particles such as the and bosons. The results are applied to…