Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for CP Violation in Charged-Xi and Lambda Hyperon Decays   We have compared the proton and antiproton angular distributions in 117
million Xi-minus -> Lambda + pi-minus -> proton + pi-minus + pi-minus and 41
million anti-Xi-minus -> anti-Lamba + pi-plus -> antiproton + pi-plus + pi-plus
decays using a subset of the data from the HyperCP experiment (E871) at
Fermilab. We find no evidence of CP violation, with the direct-CP-violating
parameter $A_{\Xi\Lambda} = \frac{\alpha_{\Xi}\alpha_{\Lambda} -
\bar{\alpha}_{\Xi}\bar{\alpha}_{\Lambda}}{\alpha_{\Xi}\alpha_{\Lambda} +
\bar{\alpha}_{\Xi}\bar{\alpha}_{\Lambda}} =
[0.0+/-5.1(stat)+/-4.4(syst)]{\times}10^{-4}$.

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The categories of this paper are: econ
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The categories of this paper are: comp-gas
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The categories of this paper are: q-fin
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The categories of this paper are: chao-dyn
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The categories of this paper are: hep-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: quant-ph
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The categories of this paper are: supr-con
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The categories of this paper are: adap-org
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The categories of this paper are: math
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The categories of this paper are: mtrl-th
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The categories of this paper are: q-bio
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The categories of this paper are: nucl-ex
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: eess