Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP/CPT Experiments with Neutral Kaons -OR- Experimental Study of Two
  Complex Numbers eta+- and eta00   Recent and upcoming Fermilab experiments to probe the origin of CP violation
and to search for CPT violation are reviewed for an audience of theoretical
particle physics graduate students.

37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
32
The categories of this paper are: atom-ph
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
15
The categories of this paper are: nucl-ex
7
The categories of this paper are: hep-th
17
The categories of this paper are: q-fin
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol