Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Four neutrino oscillation analysis of the Superkamiokande atmospheric
  neutrino data   Superkamiokande atmospheric neutrino data (contained and upward going through
$\mu$ events) for 990 days are analyzed in the framework of four neutrinos
(three active and one sterile neutrinos) without imposing constraints of Big
Bang Nucleosynthesis. It is shown that the wide range of the oscillation
parameters is allowed at 90% confidence level ($0.1\lesssim
|U_{s1}|^2+|U_{s2}|^2\le 1$), where the best fit point has some contribution of
$\nu_\mu\leftrightarrow\nu_s$ and contribution of $\Delta m^2_{\rm\scriptsize
LSND}$. The case of pure $\nu_\mu\leftrightarrow\nu_s$ oscillation is excluded
at 99.7%CL (3.0$\sigma$) which is consistent with the recent analysis by the
Superkamiokande group. Combining this result with the analysis by Giunti,
Gonzarez-Garcia and Pe\~na-Garay, it is found that the Large Mixing Angle and
Vacuum Oscillation solutions of the solar neutrino problem are also allowed.

3
The categories of this paper are: physics
34
The categories of this paper are: chem-ph
16
The categories of this paper are: stat
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
11
The categories of this paper are: hep-lat
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
31
The categories of this paper are: ao-sci
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
23
The categories of this paper are: solv-int
25
The categories of this paper are: patt-sol
15
The categories of this paper are: nucl-ex