2001/11/08 by M. Osmo, F. Piccinini, Osmo, M. +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/0111088
LaTeX, JHEP style, 5 pag. Talk presented at EPS HEP2001, Budapest, Hungary, 12 - 18 July, 2001
arxiv created 2001/11/08 · arxiv updated 2009/11/30
The search for quartic anomalous gauge couplings (QAGC) at LEP requires appropriate predictions for the radiative processes e+ e- → ννγγ, e+ e- → qqγγand e+ e- → 4 fermions+γ. The current knowledge on dimension-six operators giving rise to QAGC is briefly reviewed, together with their implementation in event generators. The accuracy of calculations based on real approximations (used up to now for the LEP experimental analysis) is examined by comparing them with the available exact matrix element calculations.