Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Problem of the Complete Measurement for CP-violating Parameters in
  Neutral B-meson Decays   Phenomenological CP-violating parameters in decays of neutral B-mesons are
discussed. Special attention is given to the degree of their measurability. We
emphasize important role of the sign of $\Delta m_B$ and suggest how it could
be determined experimentally.

18
The categories of this paper are: econ
37
The categories of this paper are: supr-con
2
The categories of this paper are: math
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
32
The categories of this paper are: atom-ph
17
The categories of this paper are: q-fin
7
The categories of this paper are: hep-th
9
The categories of this paper are: nlin
35
The categories of this paper are: mtrl-th
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
31
The categories of this paper are: ao-sci
22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th