Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Fermion mass hierarchies and mixings in a $B-L$ model with $D_4\times
  Z_4\times Z_2$ symmetry   We propose a gauge $B-L$ model with $D_4\times Z_4\times Z_2$ symmetry that
can explain the charged lepton and quark mass hierarchies as well as the lepton
and quark mixing patterns with the CP phases through the type-I seesaw
mechanism.

30
The categories of this paper are: q-alg
8
The categories of this paper are: hep-ex
18
The categories of this paper are: econ
6
The categories of this paper are: astro-ph
28
The categories of this paper are: alg-geom
17
The categories of this paper are: q-fin
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
4
The categories of this paper are: cond-mat
16
The categories of this paper are: stat
26
The categories of this paper are: bayes-an
25
The categories of this paper are: patt-sol
7
The categories of this paper are: hep-th
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
10
The categories of this paper are: q-bio