QCD Corrections to Four-jet Production and Three-jet Structure in e+ e- annihilation

Details QCD Corrections to Four-jet Production and Three-jet Structure in e+ e- annihilation QCD Corrections to Four-jet Production and Three-jet Structure in e+ e- annihilation

1999-01-12

arxiv.org/abs/hep-ph/9901277v2

Phys.Rev.D60:054028,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

28 pages, Latex, final version

Scientific paper

10.1103/PhysRevD.60.054028

We 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. The program is based on the dipole formalism and uses a remapping of phase-space in order to improve the efficiency of the Monte Carlo integration. Numerical results are given for the four-jet fraction and the D-parameter. These results are compared with already existing ones in the literature and serve as a cross-check. The program can also be used to investigate the internal structure of three-jet events at NLO. We give results for previously uncalculated observables: the jet broadening variable and the softest-jet explanarity.

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