Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of Prompt Charm Meson Production Cross Sections in p anti-p
  Collisions at s**(1/2) = 1.96 TeV   We report on measurements of differential cross sections d sigma/d p_t for
prompt charm meson production in p anti-p collisions at s**(1/2) = 1.96 TeV
using 5.8 +/- 0.3 pb-1 of data from the CDF II detector at the Fermilab
Tevatron. The data are collected with a new trigger that is sensitive to the
long lifetime of hadrons containing heavy flavor. The charm meson cross
sections are measured in the central rapidity region |y| \leq 1 in four fully
reconstructed decay modes: D0 --> K- pi+, D*+ -> D0 pi+, D+ --> K- pi+ pi+,
D+_s--> phi pi+, and their charge conjugates. The measured cross sections are
compared to theoretical calculations.

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The categories of this paper are: hep-th
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The categories of this paper are: plasm-ph
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The categories of this paper are: dg-ga
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The categories of this paper are: quant-ph
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The categories of this paper are: stat
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The categories of this paper are: nucl-th
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The categories of this paper are: math
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The categories of this paper are: chem-ph
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The categories of this paper are: chao-dyn
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The categories of this paper are: nucl-ex
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The categories of this paper are: eess
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The categories of this paper are: supr-con
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The categories of this paper are: econ
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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