Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Open heavy flavour and J/psi production in proton-proton collisions
  measured with the ALICE experiment at LHC   Open heavy flavour and J/psi production are powerful tools to test pQCD
calculations in proton-proton collisions in the new LHC energy regime. In
addition, they provide the necessary reference for the ALICE heavy-ion program.
The ALICE experiment at the LHC collected proton-proton collisions at sqrt{s} =
7 and 2.76 TeV in 2010 and 2011. We report here the latest results of open
heavy flavour and J/psi production at both mid- and forward-rapidity via their
various hadronic and leptonic decay channels. These include, among other
topics, the first LHC result on J/psi polarization, multiplicity dependence of
the J/psi production, D-meson measurement down to low transverse momentum and
J/psi production from B-hadron decays. Comparisons with different theoretical
models will be discussed as well.

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The categories of this paper are: math
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The categories of this paper are: alg-geom
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The categories of this paper are: hep-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: q-fin
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: nucl-ex
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The categories of this paper are: mtrl-th
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-th
31
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: chao-dyn
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The categories of this paper are: stat
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The categories of this paper are: bayes-an