Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Direct CP Violation Searches in Charmless Hadronic B Meson Decays   We search for direct CP violation in charmless hadronic B decays observed in
a sample of about 22.7 million $B\bar{B}$ pairs collected with the BABAR
detector at the PEP-II asymmetric-energy $e^+e^-$ collider. We measure the
following charge asymmetries: ${\cal A}_{CP} (B^{\pm}\to\eta^\prime K^{\pm}) =
-0.11\pm 0.11\pm 0.02$, ${\cal A}_{CP} (B^{\pm}\to\omega \pi^{\pm}) =
-0.01^{+0.29}_{-0.31}\pm 0.03$, ${\cal A}_{CP} (B^{\pm}\to\phi K^{\pm}) =
-0.05\pm 0.20\pm 0.03$, ${\cal A}_{CP} (B^{\pm}\to\phi K^{*\pm}) =
-0.43^{+0.36}_{-0.30}\pm 0.06$, and ${\cal A}_{CP} (B^{0}\to\phi K^{*0}) =
0.00\pm 0.27\pm 0.03$.

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The categories of this paper are: nucl-th
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The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
31
The categories of this paper are: ao-sci
2
The categories of this paper are: math
24
The categories of this paper are: dg-ga
1
The categories of this paper are: cs
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
26
The categories of this paper are: bayes-an
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The categories of this paper are: hep-lat
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
21
The categories of this paper are: adap-org
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The categories of this paper are: nlin
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The categories of this paper are: hep-th