Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Scanning the BFKL pomeron in elastic production of vector mesons at HERA   Elastic production of vector mesons $\gamma^{*} N\to V N$ is the
pomeron-exchange dominated diffractive reaction with much potential of probing
the BFKL pomeron. The BFKL pomeron can conveniently be described in terms of
the dipole cross section which is a solution of the generalized BFKL equation.
In this paper we discuss, how the energy and $Q^{2}$ dependence of elastic
production of vector mesons at HERA will allow scanning the dipole cross
section as a function of dipole size $r$. We show that determinaton of the
intercept of the BFKL pomeron requires measuring the $\rho^{0}$ and $J/\Psi$
production at $Q^{2} \sim (100-200)GeV^2$ and/or the quasireal photoproduction
of the $\Upsilon$. We present predictions for the effective intercept in the
kinematic range of the forthcoming HERA experiments, which can shed much light
on the nonperturbative component of the pomeron.

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The categories of this paper are: nlin
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The categories of this paper are: ao-sci
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The categories of this paper are: bayes-an
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The categories of this paper are: comp-gas
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The categories of this paper are: nucl-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph
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The categories of this paper are: eess
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The categories of this paper are: cs
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: q-fin
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The categories of this paper are: math-ph
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The categories of this paper are: quant-ph