Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Angular analysis of the decay B0 to K*0 mu mu from pp collisions at
  sqrt(s) = 8 TeV   The angular distributions and the differential branching fraction of the
decay B0 to K*0(892) mu mu are studied using data corresponding to an
integrated luminosity of 20.5 inverse femtobarns collected with the CMS
detector at the LHC in pp collisions at sqrt(s) = 8 TeV. From 1430 signal
decays, the forward-backward asymmetry of the muons, the K*0(892) longitudinal
polarization fraction, and the differential branching fraction are determined
as a function of the dimuon invariant mass squared. The measurements are among
the most precise to date and are in good agreement with standard model
predictions.

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The categories of this paper are: nlin
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
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The categories of this paper are: q-bio
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The categories of this paper are: cond-mat
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The categories of this paper are: bayes-an
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The categories of this paper are: chem-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: math-ph
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The categories of this paper are: math
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The categories of this paper are: hep-th
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The categories of this paper are: q-alg
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The categories of this paper are: hep-lat
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The categories of this paper are: funct-an