1997/10/09 by M. A. Doncheski, Michael A. Doncheski, Doncheski, Michael A. +4
Physics and Astronomy · #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9710299
Latex file uses revtex version 3, epsfig, and rotate, 13 postscript figures are attached
arxiv created 1997/10/09 · openalex publication_date 1997/10/09 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We studied single W boson production in high energy eγ collisions and the sensitivity of various observables to the WWγ gauge boson coupling by evaluating the helicity amplitudes of all Feynman diagrams which contribute to the final state being studied, including the W decay to final state fermions. We examined W production at 500 GeV and 1 TeV e+e- colliders, comparing results for photon spectra obtained from a backscattered laser and from beamstrahlung radiation. Here we found that the couplings could best be measured using the backscattered laser photons with |δκγ|≤ 0.07 and |λγ| ≤ 0.05 at a 500 GeV collider and |δκγ|≤ 0.07 and |λγ| ≤ 0.02 at a 1 TeV collider, all at 95% C.L.. The measurement of κγ is at the threshold of being able to measure loop contributions to the trilinear gauge boson vertex. For completeness we include the limits achievable using single W production at a 200 GeV e+e- collider in the Weizacker-Williams approximation. This process can measure κγ to ± 0.15 at 95% C.L. which is comparable to the W pair production process.