Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the b-hadron production cross section using decays to
  D*muX final states in pp collisions at sqrt(s) = 7 TeV with the ATLAS
  detector   The b-hadron production cross section is measured with the ATLAS detector in
pp collisions at sqrt(s) = 7 TeV, using 3.3 pb^-1 of integrated luminosity,
collected during the 2010 LHC run. The b-hadrons are selected by partially
reconstructing D*muX final states. Differential cross sections are measured as
functions of the transverse momentum and pseudorapidity. The measured
production cross section for a b-hadron with pT>9 GeV and |eta|<2.5 is 32.7 pm
0.8 (stat) ^{+4.5}_{-6.8} (syst) ub, higher than the next-to-leading-order QCD
predictions but consistent within the experimental and theoretical
uncertainties.

27
The categories of this paper are: comp-gas
1
The categories of this paper are: cs
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
6
The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio