Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Prompt and non-prompt J/psi production in pp collisions at sqrt(s) = 7
  TeV   The production of J/psi mesons is studied in pp collisions at sqrt(s)=7 TeV
with the CMS experiment at the LHC. The measurement is based on a dimuon sample
corresponding to an integrated luminosity of 314 inverse nanobarns. The J/psi
differential cross section is determined, as a function of the J/psi transverse
momentum, in three rapidity ranges. A fit to the decay length distribution is
used to separate the prompt from the non-prompt (b hadron to J/psi) component.
Integrated over J/psi transverse momentum from 6.5 to 30 GeV/c and over
rapidity in the range |y| < 2.4, the measured cross sections, times the dimuon
decay branching fraction, are 70.9 \pm 2.1 (stat.) \pm 3.0 (syst.) \pm
7.8(luminosity) nb for prompt J/psi mesons assuming unpolarized production and
26.0 \pm 1.4 (stat.) \pm 1.6 (syst.) \pm 2.9 (luminosity) nb for J/psi mesons
from b-hadron decays.

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The categories of this paper are: q-bio
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The categories of this paper are: astro-ph
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The categories of this paper are: econ
27
The categories of this paper are: comp-gas
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The categories of this paper are: quant-ph
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The categories of this paper are: funct-an
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The categories of this paper are: adap-org
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The categories of this paper are: solv-int
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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: math-ph
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The categories of this paper are: nlin
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The categories of this paper are: patt-sol
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The categories of this paper are: nucl-ex
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The categories of this paper are: physics
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The categories of this paper are: hep-th