Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hard Exclusive QCD Processes at the Linear Collider   The next generation of $e^+e^-$ colliders will offer a possibility of clean
testing of QCD dynamics. Recent progress in the theoretical description of
exclusive processes permits for many of them a consistent use of the
perturbative QCD methods.
  We find that already on the basis of Born approximation, the exclusive
diffractive production of two $\rho$ mesons from virtual photons at very high
energies should be measurable at the linear collider (LC).

24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
12
The categories of this paper are: nucl-th
26
The categories of this paper are: bayes-an
10
The categories of this paper are: q-bio
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
14
The categories of this paper are: math-ph
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
27
The categories of this paper are: comp-gas
28
The categories of this paper are: alg-geom
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
20
The categories of this paper are: acc-phys
33
The categories of this paper are: plasm-ph