Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Four Generation CP Violation in B -> phi K^0, pi^0 K^0, eta' K^0 and
  Hadronic Uncertainties   The fourth generation can give the correct trend of S_{phi K^0}, S_{pi^0 K^0}
< sin2phi_1/beta, as indicated by data, and the effect, being largely leading
order, is robust against hadronic uncertainties. The effect on S_{eta' K^0},
however, is diluted away by hadronic effects, and S_{eta' K^0} \simeq
sin2phi_1/beta is expected. The near maximal arg[V^*_{t's}V_{t'b}] \lesssim
90^\circ that is needed could resolve the unequal direct CP violation seen in B
-> K^+ pi^- and K^+ pi^0 modes, and is consistent with b ->s l^+l^- and B_s
mixing constraints.

37
The categories of this paper are: supr-con
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
2
The categories of this paper are: math
35
The categories of this paper are: mtrl-th
5
The categories of this paper are: gr-qc
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
36
The categories of this paper are: cmp-lg
13
The categories of this paper are: quant-ph