Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Joint Measurement of the $^{235}$U Antineutrino Spectrum by Prospect and
  Stereo   The PROSPECT and STEREO collaborations present a combined measurement of the
pure $^{235}$U antineutrino spectrum, without site specific corrections or
detector-dependent effects. The spectral measurements of the two highest
precision experiments at research reactors are found to be compatible with
$\chi^2/\mathrm{ndf} = 24.1/21$, allowing a joint unfolding of the prompt
energy measurements into antineutrino energy. This $\bar{\nu}_e$ energy
spectrum is provided to the community, and an excess of events relative to the
Huber model is found in the 5-6 MeV region. When a Gaussian bump is fitted to
the excess, the data-model $\chi^2$ value is improved, corresponding to a
$2.4\sigma$ significance.

29
The categories of this paper are: funct-an
11
The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
4
The categories of this paper are: cond-mat
14
The categories of this paper are: math-ph
26
The categories of this paper are: bayes-an
9
The categories of this paper are: nlin
13
The categories of this paper are: quant-ph
21
The categories of this paper are: adap-org
31
The categories of this paper are: ao-sci
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
37
The categories of this paper are: supr-con
19
The categories of this paper are: eess
0
The categories of this paper are: hep-ph