Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Jpsi and dielectron photoproduction measurements with PHENIX   Jpsi and dielectron photoproduction measurements in ultra-peripheral Au+Au
collisions at 200 GeV with the PHENIX experiment are presented. The triggered
events correspond to those accompanied with forward neutron emission from the
Au dissociation. Jpsi and high-mass dielectron cross sections and pT
distributions are consistent with various theoretical calculations.

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The categories of this paper are: funct-an
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The categories of this paper are: atom-ph
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The categories of this paper are: adap-org
11
The categories of this paper are: hep-lat
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The categories of this paper are: alg-geom
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The categories of this paper are: dg-ga
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The categories of this paper are: eess
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
12
The categories of this paper are: nucl-th
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The categories of this paper are: cmp-lg
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The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio
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The categories of this paper are: mtrl-th
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph