Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: QCD Corrections to Four-jet Production and Three-jet Structure in e+ e-
  annihilation   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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The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
8
The categories of this paper are: hep-ex
2
The categories of this paper are: math
37
The categories of this paper are: supr-con
17
The categories of this paper are: q-fin
28
The categories of this paper are: alg-geom
7
The categories of this paper are: hep-th
12
The categories of this paper are: nucl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: atom-ph
5
The categories of this paper are: gr-qc
13
The categories of this paper are: quant-ph
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph