Final State Radiative Effects for the Exact O(alpha) YFS Exponentiated (Un)Stable W+W- Production At and Beyond LEP2 Energies

TL;DR

This paper develops a Monte Carlo event generator to accurately simulate final state radiative effects in W+W- production at LEP2 energies, incorporating both Standard Model and anomalous couplings.

Contribution

It introduces an improved Monte Carlo generator, YFSWW3 v1.12, for precise modeling of radiative effects in W+W- production including anomalous couplings.

Findings

Successfully simulated n(γ) radiation from initial and intermediate states.

Demonstrated the generator's capability with sample Monte Carlo data.

Enhanced accuracy in modeling W decay radiative effects.

Abstract

We present the LL final state radiative effects for the exact O(alpha) YFS exponentiated (un)stable WW pair production at LEP2/NLC energies using Monte Carlo event generator methods. The respective event generator, version 1.12 of the program YFSWW3, wherein both Standard Model and anomalous triple gauge boson couplings are allowed, generates n(\gamma) radiation both from the initial state and from the intermediate W+ W- and generates the LL final state W decay radiative effects. Sample Monte Carlo data are illustrated.