Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Colour Connection and Diquark Fragmentation in e^+e^- \to c \bar c q
  \bar q \to h's Process   The hadronization effects induced by different colour connections of
$c\bar{c}q\bar{q}$ system in $e^+e^-$ annihilation are investigated by a toy
model where diquark fragmentation is employed based on Pythia. It is found that
the correlations between the charm baryons and charm antibaryons produced via
diquark pair fragmentation are much stronger, and their momentum spectra are
harder than those from the standard colour connection in Pythia.

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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: solv-int
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The categories of this paper are: nucl-th
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The categories of this paper are: ao-sci
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The categories of this paper are: econ
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The categories of this paper are: astro-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: chao-dyn
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The categories of this paper are: cs
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The categories of this paper are: hep-th
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The categories of this paper are: hep-ex
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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: quant-ph
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The categories of this paper are: math-ph