Theoretical developments on Quartic Gauge Boson Couplings at LEP

Details Theoretical developments on Quartic Gauge Boson Couplings at LEP Theoretical developments on Quartic Gauge Boson Couplings at LEP

2001-11-08

arxiv.org/abs/hep-ph/0111088v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, JHEP style, 5 pag. Talk presented at EPS HEP2001, Budapest, Hungary, 12 - 18 July, 2001

Scientific paper

The search for quartic anomalous gauge couplings (QAGC) at LEP requires appropriate predictions for the radiative processes e+ e- \to \nu\bar\nu \gamma\gamma, e+ e- \to q\bar{q}\gamma\gamma and e+ e- \to 4 fermions+\gamma. 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.

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