Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: An A4 x Z4 model for neutrino mixing   The A4 x U(1) flavor model of He, Keum, and Volkas is extended to provide a
minimal modification to tribimaximal mixing that accommodates a nonzero reactor
angle theta13 ~ 0.1. The sequestering problem is circumvented by forbidding
superheavy scales and large coupling constants which would otherwise generate
sizable RG flows. The model is compatible with (but does not require) a stable
or metastable dark matter candidate in the form of a complex scalar field with
unit charge under a discrete subgroup Z4 of the U(1) flavor symmetry.

36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
14
The categories of this paper are: math-ph
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
12
The categories of this paper are: nucl-th
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph
6
The categories of this paper are: astro-ph
30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
37
The categories of this paper are: supr-con