Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: 3-3-1 Models at Electroweak Scale   We show that in 3-3-1 models there exist a natural relation among the
$SU(3)_L$ coupling constant $g$, the electroweak mixing angle $\theta_W$, the
mass of the $W$, and one of the vacuum expectation values, which implies that
those models can be realized at low energy scales and, in particular, even at
the electroweak scale. So that, being that symmetries realized in Nature, new
physics may be really just around the corner.

12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
24
The categories of this paper are: dg-ga
6
The categories of this paper are: astro-ph
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
7
The categories of this paper are: hep-th
34
The categories of this paper are: chem-ph
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th
29
The categories of this paper are: funct-an
14
The categories of this paper are: math-ph
33
The categories of this paper are: plasm-ph
3
The categories of this paper are: physics
8
The categories of this paper are: hep-ex