Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Possible Alternatives to Tri-bimaximal Mixing   Possible alternatives to tri-bimaximal mixing are presented based on other
symmetry principles, and their predictions for |U_{e3}|, sin^2 theta_{12} and
sin^2 theta_{23} are compared to the present neutrino mixing data. In some
cases perturbations are required to give better agreement with the data, and
the use of a minimal approach is illustrated. Precise experimental
determinations of the mixing parameters will be required to decipher the
correct mixing pattern and to pin down the appropriate flavor symmetry.

22
The categories of this paper are: chao-dyn
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
15
The categories of this paper are: nucl-ex
20
The categories of this paper are: acc-phys
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
24
The categories of this paper are: dg-ga
33
The categories of this paper are: plasm-ph
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
14
The categories of this paper are: math-ph
1
The categories of this paper are: cs
2
The categories of this paper are: math
6
The categories of this paper are: astro-ph
3
The categories of this paper are: physics