Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spin Effects in Diffractive $J/\Psi$ Leptoproduction and Structure of
  Pomeron Coupling   We calculate the cross section and the $A_{ll}$ asymmetry of the diffractive
vector meson leptoproduction for a simple model of the pomeron coupling with
the proton. It is found that the sensitivity of the spin--dependent cross
section of the diffractive $J/\Psi$ production to the pomeron coupling
structure is rather weak. The conclusion is made that it will be difficult to
study the structure of the pomeron coupling with the proton in future polarized
diffractive experiments on the $J/\Psi$ production.

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The categories of this paper are: math-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: cmp-lg
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The categories of this paper are: solv-int
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-th
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The categories of this paper are: funct-an
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The categories of this paper are: econ
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The categories of this paper are: acc-phys
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The categories of this paper are: stat
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The categories of this paper are: astro-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: atom-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: patt-sol
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The categories of this paper are: dg-ga