Dominant NNLO corrections to four-fermion production near the W-pair production threshold

2008/07/01 by Stefano Actis, S. Actis, M. Beneke +4 · 1 citation
Medicine · Physics and Astronomy · #Coulomb #Electron #Fermion #Interference (communication) #Medical Imaging Techniques and Applications #Nuclear physics #Pair production #Particle physics #Particle physics theoretical and experimental studies #Photon #Physics #Production (economics) #Quantum Chromodynamics and Particle Interactions #Quantum electrodynamics #Quantum mechanics #Radiative transfer #Telecommunications #hep-ph

paper · pdf · doi:10.1016/j.nuclphysb.2008.08.006

published as Nucl.Phys.B807:1-32,2009 · 34 pages, LaTeX, 12 figures

arxiv created 2008/07/01 · openalex publication_date 2008/08/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

We calculate the parametrically dominant next-to-next-to-leading order corrections to four-fermion production e^- e⁺ -> mu^- nubar_mu u dbar + X at centre-of-mass energies near the W-pair production threshold employing the method of unstable-particle effective theory. In total the correction is small, leading to a shift of 3 MeV in the W-mass measurement. We also discuss the implementation of realistic cuts and provide a result for the interference of single-Coulomb and soft radiative corrections that can easily be extended to include an arbitrary number of Coulomb photons.

Citations

• TESLA Technical Design Report Part III: Physics at an e+e- Linear Collider
• An effective field theory for collinear and soft gluons: Heavy to light decays
• The Monte Carlo event generator YFSWW3 version 1.16 for W-pair production and decay at LEP2/LC energies
• Towards pair production near threshold with unstable particle effective theory
• Asymptotic expansion of Feynman integrals near threshold
• WW Cross-sections and Distributions
• Review of Particle Physics

Cited by

• Theory status of four-fermion production at e-e+ colliders