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O'Mega: An Optimizing Matrix Element Generator
Thorsten Ohl
I sketch the architecture of O'Mega, a new optimizing compiler for tree amplitudes in quantum field theory. O'Mega generates the most efficient code currently available for scatter…
Non Abelian Gauge Couplings in Four Fermion Processes at LEP
G. Montagna, M. Moretti, M. Osmo +2
The LEP data on four fermion processes are presently used to study the non abelian gauge couplings of the Standard Model. The present theoretical error for two classes of processes…
Two-Fermion Production in Electron-Positron Collisions
Michael Kobel, Zbigniew Was, C. Ainsley +31
This report summarizes the results of the two-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the theoretical calculations of…
A new approach to multi-jet calculations in hadron collisions
M. Moretti
The ALPHA algorithm to evaluate the exact, tree-level matrix elements is reviewed in the context of multi-parton processes in QCD. The algorithm is suited for the authomatic calcul…
Four-Fermion Production in Electron-Positron Collisions
Martin W. Gruenewald, Giampiero Passarino, E. Accomando +37
This report summarises the results of the four-fermion working group of the LEP2-MC workshop, held at CERN from 1999 to 2000. Recent developments in the calculation of four-fermion…
Higher-order QED corrections to single-W production in electron-positron collisions
G. Montagna, M. Moretti, O. Nicrosini +2
Four-fermion processes with a particle lost in the beam pipe are studied at LEP to perform precision tests of the electroweak theory. Leading higher-order QED corrections to such p…