Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Some comments on $\bar n p$-annihilation branching ratios into $\pi
  \pi$-, $\bar K K$- and $\pi \eta$-channels   We give some remarks on the $\bar n p$-partial branching ratios in flight at
low momenta of antineutron, measured by OBELIX collaboration. The comparison is
made to the known branching ratios from the $p \bar p$-atomic states. The
branching ratio for the reaction $\bar n p \to \pi^+\pi^0$ is found to be
suppressed in comparison to what follows from the $ p \bar p$-data. It is also
shown, that there is no so called dynamic I=0-amplitude suppression for the
process $N\bar N \to K\bar K$.

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The categories of this paper are: supr-con
16
The categories of this paper are: stat
24
The categories of this paper are: dg-ga
31
The categories of this paper are: ao-sci
23
The categories of this paper are: solv-int
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The categories of this paper are: funct-an
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The categories of this paper are: nucl-ex
2
The categories of this paper are: math
30
The categories of this paper are: q-alg
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex
4
The categories of this paper are: cond-mat
1
The categories of this paper are: cs
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The categories of this paper are: atom-ph
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The categories of this paper are: q-fin
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The categories of this paper are: econ