Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Probing the Parton Densities of Virtual Photons at ep Colliders   The feasibility of an experimental determination of the parton distributions
of virtual photons at high energy $ep$ colliders is studied in the context of
the DESY-HERA collider. Recently proposed parton densities of virtual photons
are utilized to evaluate the appropriate production processes and their
relevant kinematical regions. It is demonstrated that high $E_T$ jet production
with $E_T\,\simeq 5-7\, {\rm{GeV}}$ and $b\bar{b}$ production can probe the
parton distributions of virtual photons up to virtualities of a few
${\rm{GeV}}^2$. A useful leading order parametrization of our proposed photonic
parton densities, suitable for further studies of these issues, is presented.

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The categories of this paper are: math
22
The categories of this paper are: chao-dyn
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The categories of this paper are: q-fin
4
The categories of this paper are: cond-mat
37
The categories of this paper are: supr-con
28
The categories of this paper are: alg-geom
12
The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
16
The categories of this paper are: stat
20
The categories of this paper are: acc-phys
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The categories of this paper are: adap-org
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The categories of this paper are: bayes-an
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The categories of this paper are: gr-qc
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The categories of this paper are: eess
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The categories of this paper are: quant-ph
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The categories of this paper are: q-bio