Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Measurements of CP violation parameters at the NA48 experiment at CERN   Recent precise measurements of CP violation parameters in kaon decays at the
NA48 experiment: indirect CPV parameter $|\eta_{+-}|$, and charge asymmetries
in $K^\pm\to3\pi$ decays, are presented.

7
The categories of this paper are: hep-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
28
The categories of this paper are: alg-geom
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
17
The categories of this paper are: q-fin
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
13
The categories of this paper are: quant-ph
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The categories of this paper are: comp-gas
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
2
The categories of this paper are: math
29
The categories of this paper are: funct-an
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The categories of this paper are: solv-int