Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Off-shell unitarity and geometrical effects in deep-inelastic scattering
  and vector-meson electroproduction   Deep-inelastic scattering at low x and elastic vector meson production are
considered on the basis of the off-shell extension of the s-channel unitarity.
We discuss behavior of the structure function F_2(x,Q^2) at low x and the total
cross-section of virtual photon-proton scattering and obtain, in particular,
the dependence sigma^{tot}_{gamma^* p}\sim (W^2)^{lambda(Q^2)} where exponent
lambda(Q^2) is related to the interaction radius of a constituent quark. The
energy dependence of the total cross-section of gamma^*gamma^*-interactions is
calculated. The explicit mass dependence of the exponent in the power energy
behavior of the vector meson production in the processes of virtual photon
interactions with a proton gamma^*p to Vp has been obtained. We also consider
angular distributions at large momentum transfers.

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The categories of this paper are: astro-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
33
The categories of this paper are: plasm-ph
26
The categories of this paper are: bayes-an
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: physics
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The categories of this paper are: math-ph
34
The categories of this paper are: chem-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: comp-gas