Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Near-to-planar 3-jet events in and beyond QCD perturbation theory   We present the results of QCD analysis of out-of-event-plane momentum
distribution in 3-jet e+e- annihilation events. We consider the all-order
resummed perturbative prediction and the leading power suppressed
non-perturbative corrections to the mean value <K_out> and the distribution and
explain their non-trivial colour structure. The technique we develop aims at
improving the accuracy of the theoretical description of multi-jet ensembles,
in particular in hadron-hadron collisions.

25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
24
The categories of this paper are: dg-ga
26
The categories of this paper are: bayes-an
17
The categories of this paper are: q-fin
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
10
The categories of this paper are: q-bio
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph