Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Recent QCD results from the Tevatron   Recent QCD related results from the CDF and the D0 experiments are presented
based on proton anti-proton collision data at sqrt(s)=1.96 TeV, taken in Run II
of the Fermilab Tevatron Collider. Measured observables include inclusive
photon and diphoton production, vector boson plus jets production, event shape
variables, and inclusive multijet production. The measurement results are
compared to QCD theory calculations in different approximations. A
determination of the strong coupling constant from jet data is presented.

18
The categories of this paper are: econ
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
25
The categories of this paper are: patt-sol
12
The categories of this paper are: nucl-th
35
The categories of this paper are: mtrl-th
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
31
The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
6
The categories of this paper are: astro-ph
34
The categories of this paper are: chem-ph
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
27
The categories of this paper are: comp-gas