Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Sterile Plus Active Neutrinos and Neutrino Oscillations   Using a 3 + 1 neutrino model with one sterile and the three standard active
neutrinos with a 4x4 unitary transformation matrix, U, relating flavor to mass
neutrino states, the probability of $\nu_\mu$ to $\nu_e$ transition is
estimated using sterile-active neutrino masses determined by MiniBooNE and
other experiments and sterile-active neutrino angles in the 4x4 U matrix.

18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
21
The categories of this paper are: adap-org
28
The categories of this paper are: alg-geom
27
The categories of this paper are: comp-gas
32
The categories of this paper are: atom-ph
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph
1
The categories of this paper are: cs
33
The categories of this paper are: plasm-ph
36
The categories of this paper are: cmp-lg
19
The categories of this paper are: eess
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga