Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurement of the $^{12}$C($n,p$)$^{12}$B cross section at n_TOF (CERN)
  by in-beam activation analysis   The integral cross section of the $^{12}$C($n,p$)$^{12}$B reaction has been
determined for the first time in the neutron energy range from threshold to
several GeV at the n_TOF facility at CERN. The measurement relies on the
activation technique, with the $\beta$-decay of $^{12}$B measured over a period
of four half-lives within the same neutron bunch in which the reaction occurs.
The results indicate that model predictions, used in a variety of applications,
are mostly inadequate. The value of the integral cross section reported here
can be used as a benchmark for verifying or tuning model calculations.

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The categories of this paper are: physics
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The categories of this paper are: dg-ga
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-ph
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The categories of this paper are: astro-ph
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The categories of this paper are: acc-phys
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: supr-con
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The categories of this paper are: gr-qc
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The categories of this paper are: math
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The categories of this paper are: q-fin
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The categories of this paper are: plasm-ph