Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of top quark pair relative differential cross-sections with
  ATLAS in pp collisions at sqrt(s) = 7 TeV   Measurements are presented of differential cross-sections for top quark pair
production in pp collisions at sqrt(s) = 7 TeV relative to the total inclusive
top quark pair production cross-section. A data sample of 2.05/fb recorded by
the ATLAS detector at the Large Hadron Collider is used. Relative differential
cross-sections are derived as a function of the invariant mass, the transverse
momentum and the rapidity of the top quark pair system. Events are selected in
the lepton (electron or muon) + jets channel. The background-subtracted
differential distributions are corrected for detector effects, normalized to
the total inclusive top quark pair production cross-section and compared to
theoretical predictions. The measurement uncertainties range typically between
10% and 20% and are generally dominated by systematic effects. No significant
deviations from the Standard Model expectations are observed.

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The categories of this paper are: acc-phys
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The categories of this paper are: supr-con
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The categories of this paper are: eess
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The categories of this paper are: hep-lat
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The categories of this paper are: nlin
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: math
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The categories of this paper are: ao-sci
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The categories of this paper are: plasm-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: solv-int
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg