Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Summary of the XXX Rencontre de Moriond QCD Session   The main topics covered in this summary talk are the Large Hadron Collider,
heavy ion collisions, renormalons, parton distribution functions, measurements
of the strong coupling and the top quark. Of special interest this year was the
discovery of the top quark by the CDF and D0 groups at Fermilab. I conclude
that the evidence is compelling and that the best fit of the Standard Model top
hypothesis to the data gives a top mass of $170 +/- 9 GeV with a good
chisquared.

8
The categories of this paper are: hep-ex
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
13
The categories of this paper are: quant-ph
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
1
The categories of this paper are: cs
5
The categories of this paper are: gr-qc
7
The categories of this paper are: hep-th
36
The categories of this paper are: cmp-lg
34
The categories of this paper are: chem-ph
35
The categories of this paper are: mtrl-th
28
The categories of this paper are: alg-geom
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con