Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CP violation in the B system   The phenomenon of CP violation is crucial to understand the asymmetry between
matter and antimatter that exists in the Universe. Dramatic experimental
progress has been made, in particular in measurements of the behaviour of
particles containing the b quark, where CP violation effects are predicted by
the Kobayashi-Maskawa mechanism that is embedded in the Standard Model. The
status of these measurements and future prospects for an understanding of CP
violation beyond the Standard Model are reviewed.

22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
5
The categories of this paper are: gr-qc
33
The categories of this paper are: plasm-ph
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
15
The categories of this paper are: nucl-ex
13
The categories of this paper are: quant-ph
7
The categories of this paper are: hep-th
19
The categories of this paper are: eess
21
The categories of this paper are: adap-org