Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Zee and Zee-Babu mechanisms in the minimal 331 model   We show that the minimal 3-3-1 model cannot accommodate the neutrino masses
at tree level using present experimental data. Nevertheless, a modified Zee and
the Zee-Babu mechanisms for generating neutrino masses at 1-loop and 2-loop,
respectively, are automatically implemented in the minimal 3-3-1 model, without
introducing new degrees of freedom to the model. We also present a systematic
method for finding solutions to the leptonic sector masses and mixing. As a
case study, we accommodate the charged and neutral leptons masses and the PMNS
matrix in the 1-loop modified Zee mechanism contained in the minimal 3-3-1
model.

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The categories of this paper are: physics
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
34
The categories of this paper are: chem-ph
37
The categories of this paper are: supr-con
14
The categories of this paper are: math-ph
28
The categories of this paper are: alg-geom
31
The categories of this paper are: ao-sci
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
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The categories of this paper are: cond-mat
21
The categories of this paper are: adap-org
32
The categories of this paper are: atom-ph
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The categories of this paper are: astro-ph
22
The categories of this paper are: chao-dyn
35
The categories of this paper are: mtrl-th