Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Mass of the Neutrino and Its Axial-Vector Electromagnetic Nature   A neutrino possesses the anapole and electric dipole moments. Their
interaction with field of emission can also lead to the neutrino elastic
scattering by spinless nuclei. In this letter, we present some implications
implied from the process cross sections. One of them states that there exists a
hard connection between the neutrino magnetic and anapole moments. An equation
for the anapole and electric dipole form factors is also obtained. They define
the electronic neutrino axial-vector moments. All findings are generalized to
the case of a Majorana neutrino.

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The categories of this paper are: mtrl-th
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The categories of this paper are: bayes-an
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The categories of this paper are: alg-geom
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The categories of this paper are: q-alg
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The categories of this paper are: atom-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: chao-dyn
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: eess
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The categories of this paper are: q-fin
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The categories of this paper are: physics
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The categories of this paper are: astro-ph
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph