Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutrino Mass and Lepton Number Violation with Charged Scalars   If there exist only three light neutrinos below the weak scale, the neutrino
masses can arise by breaking the lepton number L. One example is the Zee
mechanism for the neutrino masses. We study phenomenological implications of
neutrino masses arising from the L violation through introduction of SU(2) X
U(1) singlet scalars with Q_{em}=1 and 2.

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The categories of this paper are: dg-ga
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The categories of this paper are: cs
2
The categories of this paper are: math
21
The categories of this paper are: adap-org
35
The categories of this paper are: mtrl-th
23
The categories of this paper are: solv-int
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The categories of this paper are: acc-phys
3
The categories of this paper are: physics
28
The categories of this paper are: alg-geom
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The categories of this paper are: hep-th
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The categories of this paper are: comp-gas
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The categories of this paper are: eess
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The categories of this paper are: plasm-ph
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The categories of this paper are: stat
34
The categories of this paper are: chem-ph
12
The categories of this paper are: nucl-th