Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Studies of QCD at LEPII   A combination of measurements of alpha_s in e+e- annihilation at LEP is
presented. Distributions of various event-shape variables measured by ALEPH,
DELPHI, L3 and OPAL at centre-of-mass energies from 41 GeV to 206 GeV are
analysed in a common theoretical framework using O(a_s**2)+NLLA predictions.
The dominant theoretical uncertainties associated to missing higher orders are
studied in detail.

37
The categories of this paper are: supr-con
5
The categories of this paper are: gr-qc
20
The categories of this paper are: acc-phys
13
The categories of this paper are: quant-ph
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
7
The categories of this paper are: hep-th
2
The categories of this paper are: math
12
The categories of this paper are: nucl-th
17
The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph