TL;DR
This paper presents a next-to-leading order QCD calculation for e+ e- to four jets, introducing modern techniques for efficient one-loop amplitude computation and a versatile numerical program for infrared safe observables.
Contribution
It introduces a new computational framework and the 'Mercutio' program for calculating four-jet quantities at NLO in electron-positron collisions.
Findings
Efficient calculation of one-loop amplitudes using modern techniques
Development of the 'Mercutio' numerical program
Capability to compute any infrared safe four-jet observable
Abstract
We report on the next-to-leading order QCD calculation for e+ e- --> 4 jets. We explain some modern techniques which have been used to calculate the one-loop amplitudes efficiently. We further report on the general purpose numerical program ``Mercutio'', which can be used to calculate any infrared safe four-jet quantity in electron-positron annihilation at next-to-leading order.
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