Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the cross section of high transverse momentum
  $Z\rightarrow b\bar{b}$ production in proton--proton collisions at
  $\sqrt{s}=8 TeV$ with the ATLAS Detector   This Letter reports the observation of a high transverse momentum
$Z\rightarrow b\bar{b}$ signal in proton-proton collisions at $\sqrt{s}=8$ TeV
and the measurement of its production cross section. The data analysed were
collected in 2012 with the ATLAS detector at the LHC and correspond to an
integrated luminosity of 19.5 fb$^{-1}$. The $Z\rightarrow b\bar{b}$ decay is
reconstructed from a pair of b-tagged jets, clustered with the anti-$k_t$ jet
algorithm with $R = 0.4$, that have low angular separation and form a dijet
with $p_T > 200$ GeV. The signal yield is extracted from a fit to the dijet
invariant mass distribution, with the dominant, multi-jet background mass shape
estimated by employing a fully data-driven technique that reduces the
dependence of the analysis on simulation. The fiducial cross section is
determined to be \[
  \sigma^\mathrm{fid}_{Z\rightarrow b\bar{b}} = 2.02 \pm 0.20 ({\rm stat.})
\pm0.25 ({\rm syst.)}\pm 0.06 ({\rm lumi.}){\rm\,pb} = 2.02 \pm{0.33}{\rm\,pb},
\] in good agreement with next-to-leading-order theoretical predictions.

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The categories of this paper are: gr-qc
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The categories of this paper are: math
1
The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: hep-th
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The categories of this paper are: stat
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The categories of this paper are: cond-mat
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The categories of this paper are: dg-ga
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The categories of this paper are: q-alg
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The categories of this paper are: nucl-th
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The categories of this paper are: quant-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: solv-int
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The categories of this paper are: q-fin
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The categories of this paper are: supr-con
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The categories of this paper are: hep-lat