Measuring WWZ and WWγ coupling constants with Z0-pole data

1999/02/24 by Peter Molnar, P. R. Molnár, M. Grünewald +1 · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph

paper · pdf · doi:10.1016/s0370-2693(99)00815-1

published as Phys.Lett. B461 (1999) 149-154 · 6 pages, 2 tables, 4 figures

arxiv created 1999/02/24 · openalex publication_date 1999/08/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Triple gauge boson couplings between Z, gamma and the W boson are determined by exploiting their impact on radiative corrections to fermion-pair production in e+e- interactions at centre-of-mass energies near the Z-pole. Recent values of observables in the electroweak part of the Standard model are used to determine the four parameters epsilon₁, epsilon₂, epsilon₃ and epsilon_b. In a second step the results on the four epsilon parameters are used to determine the couplings Delta-g¹_Z and Delta-kappa_gamma. For a wide range of scales, these indirect coupling measurements are more precise than recent direct measurements at LEP 2 and at the TEVATRON. The Standard model predictions agree well with these measurements.

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• REVIEW OF THE PROPERTIES OF THE W BOSON AT LEP, AND THE PRECISION DETERMINATION OF ITS MASS