Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: New results from the NA48/2 experiment at CERN SPS: radiative
  nonleptonic kaon decays   The NA48/2 experiment at the CERN SPS carried out data taking in 2003 and
2004. Analysis of the selected data samples of 7,146 $K^\pm\to\pi^\pm e^+e^-$
decay candidates with 0.6% background, 1,164 $K^\pm\to\pi^\pm\gamma\gamma$
candidates with 3.3% background, and 120 $K^\pm\to\pi^\pm\gamma e^+e^-$
candidates with 6.1% background allowed precise measurements of branching
fractions and other characteristics of these rare kaon decays.

17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
1
The categories of this paper are: cs
30
The categories of this paper are: q-alg
29
The categories of this paper are: funct-an
36
The categories of this paper are: cmp-lg
33
The categories of this paper are: plasm-ph
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
34
The categories of this paper are: chem-ph
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
3
The categories of this paper are: physics
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
9
The categories of this paper are: nlin