Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Observation of High Energy Quark-Antiquark Elastic Scattering with
  Mesonic Exchange   We studied the high energy quark anti-quark elastic scattering with an
exchange of a mesonic state in the $t$ channel with $-t/\Lambda_{QCD}^{2} \gg
1$. Two methods are proposed to eliminate the strong background from bare
pomeron, reggized gluon and odderon exchange. The feasibility of measuring
mesonic reggeon exchange is discussed.

10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
18
The categories of this paper are: econ
34
The categories of this paper are: chem-ph
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin
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The categories of this paper are: nlin
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The categories of this paper are: astro-ph
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: physics
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The categories of this paper are: hep-th
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The categories of this paper are: nucl-th