Light Fermion Mass Effects in e^+e^- -> 4 Fermions

Abstract

We investigated the effect of the light fermion masses on cross sections for e^+e^- into 4 fermions in the Fermion Loop scheme defined in hep-ph/9612260, and approximations to it. The effects are found to be very small, except of course in the collinear region of single W-boson production where the electron mass acts as the cut-off.

8 pages, latex, 3 ps figs included

References in corpus (3)

• Automatic Generation of Tree Level Helicity Amplitudes
• Stable Calculations for Unstable Particles: Restoring Gauge Invariance
• Definitions and upper bounds for unstable boson masses

Cited by in corpus (4)

• Unstable Particles and Non-Conserved Currents: a Generalization of the Fermion-Loop Scheme
• Single-W Production and Fermion-Loop Scheme: Numerical Results
• Non-conserved currents and gauge-restoring schemes in single W production
• Fermion Loops, conserved currents and single-W