Journal
PHYSICS LETTERS B
Volume 515, Issue 1-2, Pages 197-205Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0370-2693(01)00834-6
Keywords
electron-positron collision; radiative events; anomalous couplings; Monte Carlo
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The search for quartic anomalous gauge couplings at LEP requires appropriate predictions for the radiative processes e(+)e(-) --> nu<()over bar>gamma gamma, e(+)e(-) --> q (q) over bar gamma gamma and e(+)e(-) --> 4 fermions +gamma. Matrix elements are exactly computed at the tree level, and the effects of anomalous couplings and initial-state radiation are included. Comparisons with results and approximations existing in the literature are shown and commented. Improved versions of the event generators NUNUGPV and WRAP are made available for experimental analysis. (C) 2001 Published by Elsevier Science B.V.
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