Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Confronting Experimental Data with Heavy-Ion Models: Rivet for Heavy
  Ions   The Rivet library is an important toolkit in particle physics, and serves as
a repository for analysis data and code. It allows for comparisons between data
and theoretical calculations of the final state of collision events. This paper
outlines several recent additions and improvements to the framework to include
support for analysis of heavy ion collision simulated data. The paper also
presents examples of these recent developments and their applicability in
implementing concrete physics analyses.

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The categories of this paper are: gr-qc
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The categories of this paper are: plasm-ph
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The categories of this paper are: chao-dyn
30
The categories of this paper are: q-alg
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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: cs
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The categories of this paper are: econ
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin
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The categories of this paper are: hep-lat
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The categories of this paper are: q-fin
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The categories of this paper are: adap-org
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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: astro-ph