Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Electron capture on ^{8}B nuclei and Superkamiokande results   The energy spectrum of recoil electrons from solar neutrino scattering, as
observed by Superkamiokande, is deformed with respect to that expected from SSM
calculations. We considered \nu-e scattering from neutrinos produced by the
electron-capture on ^{8}B nuclei, e^{-}+^{8}B --> ^{8}Be^{*}+\nu_{e}, as a
possible explanation of the spectral deformation. A flux \Phi_{eB}\simeq 10^{4}
cm^{-2} s^{-1} could account for Superkamiokande solar neutrino data. However
this explanation is untenable, since the theoretical prediction,
\Phi_{eB}=(1.3+-0.2) cm^{-2} s^{-1}, is smaller by four orders of magnitude.

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The categories of this paper are: cond-mat
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
24
The categories of this paper are: dg-ga
15
The categories of this paper are: nucl-ex
34
The categories of this paper are: chem-ph
19
The categories of this paper are: eess
25
The categories of this paper are: patt-sol
30
The categories of this paper are: q-alg
33
The categories of this paper are: plasm-ph
27
The categories of this paper are: comp-gas
16
The categories of this paper are: stat
14
The categories of this paper are: math-ph
32
The categories of this paper are: atom-ph
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The categories of this paper are: hep-th
13
The categories of this paper are: quant-ph