Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Total Cross Sections with Virtual Photons   A model for total cross sections with virtual photons is presented, in
particular gamma-p and gamma-gamma cross sections are considered. Our approach
is based on an existing model for photoproduction, which subdivides the total
cross section into three distinct event classes: direct, VMD and anomalous. In
the region of large photon virtualities, the Deep Inelastic Scattering
processes (up to O(alpha_s) corrections) are obtained. Hence, the model
provides a smooth transition between the two regions. By the breakdown into
different event classes, a complete picture of all event properties is the
ultimate goal.

18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
6
The categories of this paper are: astro-ph
17
The categories of this paper are: q-fin
16
The categories of this paper are: stat
19
The categories of this paper are: eess
36
The categories of this paper are: cmp-lg
35
The categories of this paper are: mtrl-th
13
The categories of this paper are: quant-ph
11
The categories of this paper are: hep-lat
14
The categories of this paper are: math-ph
20
The categories of this paper are: acc-phys
15
The categories of this paper are: nucl-ex