Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Evidence for a 5 MeV Spectral Deviation in the Goesgen Reactor Neutrino
  Oscillation Experiment   Recent reactor neutrino experiments observe an anomalous excess around 5 MeV
in the prompt energy spectra of positrons following the inverse beta decay
reaction. In this note we suggest that this 5 MeV anomaly was already present
in a much earlier experiment, which was carried out in the 1980's at three
distances from the 2.8 GW nuclear powerplant at Goesgen, Switzerland. In
particular we demonstrate with a log-likelihood test performed on the Goesgen
data that the no-anomaly hypothesis is disfavored at a level of 3.8 sigma.

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The categories of this paper are: gr-qc
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The categories of this paper are: mtrl-th
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The categories of this paper are: astro-ph
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: solv-int
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The categories of this paper are: adap-org
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The categories of this paper are: chem-ph
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The categories of this paper are: q-alg
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The categories of this paper are: cond-mat
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The categories of this paper are: nlin
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The categories of this paper are: nucl-th
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The categories of this paper are: dg-ga
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The categories of this paper are: bayes-an
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The categories of this paper are: hep-th
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The categories of this paper are: acc-phys