Studying trilinear gauge couplings at LEP2 using optimal observables

Abstract

We study the sensitivity of the processes `e+ e- -> lepton (l) neutrino (v) quark (u) antiquark (d)' at LEP2 energies on the non-standard trilinear gauge couplings (TGC), using the optimal observables method. All relevant leading logarithmic corrections to the tree-order cross section, as well as experimental resolution effects have been studied. Taking into account correlations among the different TGC parameters we show that the limits on the TGC can reach the level of 0.15~(1sd) at 161 GeV with 100 pb${}^{-1}$, a challenge for the first LEP2 phase. At higher energies this can be improved drastically, reaching the level of 0.02~(1sd).

14 pages, latex, minor typos corrected

References in corpus (9)

• Weight optimization in multichannel Monte Carlo
• Stable Calculations for Unstable Particles: Restoring Gauge Invariance
• Finite Width Effects and Gauge Invariance in Radiative $W$ Production and Decay
• Triple Gauge Boson Couplings
• WW Cross-sections and Distributions
• On the determination of the trilinear boson couplings in e^-e^+ --> lepton anti-neutrino quark anti-quark at LEPII
• Event Generators for WW Physics
• Anomalous four-fermion processes in electron-positron collisions
• Single-$W$ versus $W$-pair production at LEP~II

Cited by in corpus (9)

• Measurements of CP-conserving Trilinear Gauge Boson Couplings WWV (V = gamma,Z) in e+e- Collisions at LEP2
• Anomalous triple gauge couplings in e+ e- -> W+ W- and "optimal" strategies for their measurement
• ERATO: event generator for four-fermion production at LEP2 energies and beyond
• Accurate Estimation of the Trilinear Gauge Couplings Using Optimal Observables Including Detector Effects
• A Method to include Detector Effects in Estimators sensitive to the Trilinear Gauge Couplings
• Report of the working group on the measurement of triple gauge boson couplings
• Extended Modified Observable Technique for a Multi-Parametric Trilinear Gauge Coupling Estimation at LEP II
• A set of sum rules for anomalous gauge boson couplings
• Multidimensional Binning Techniques for a Two Parameter Trilinear Gauge Coupling Estimation at LEP II