Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Phenomenological Implications of a Class of Neutrino Mass Matrices   The generic predictions of two-texture zero neutrino mass matrices of class A
in the flavor basis have been reexamined especially in relation to the
degeneracy between mass matrices of types A_1 and A_2 and interesting
constraints on the neutrino parameters have been obtained. It is shown that the
octant of $\theta_{23}$ and the quadrant of the Dirac-type CP-violating phase
$\delta$ can be used to lift this degeneracy.

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The categories of this paper are: atom-ph
10
The categories of this paper are: q-bio
4
The categories of this paper are: cond-mat
25
The categories of this paper are: patt-sol
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The categories of this paper are: q-fin
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
3
The categories of this paper are: physics
35
The categories of this paper are: mtrl-th
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The categories of this paper are: plasm-ph
13
The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: stat
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The categories of this paper are: alg-geom
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The categories of this paper are: chem-ph