Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Search for Neutrinos from the Core of the Earth with the Baikal
  Underwater Detector NT-36   The first stage of the Baikal Neutrino Telescope NT-200, the detector NT-36,
was operated from 1993 to 95. The data obtained with this small array were
analysed to search for vertically upward muons. Apart from neutrinos generated
in the atmosphere at the opposite side of the Earth, such muons might be due to
neutrinos produced in neutralino annihilations in the center of the Earth. We
have selected two clear neutrino candidates. From this, an 90%CL upper limit of
1.3 x 10^-13 muons cm^(-2) sec^(-1) in a cone with 15 degree half-aperture
around the opposite zenith is obtained for muons due to neutralino
annihilation.

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The categories of this paper are: gr-qc
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The categories of this paper are: alg-geom
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The categories of this paper are: adap-org
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The categories of this paper are: supr-con
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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: mtrl-th
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The categories of this paper are: econ
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The categories of this paper are: dg-ga
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
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The categories of this paper are: q-alg
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The categories of this paper are: quant-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: cs
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The categories of this paper are: chao-dyn