Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Universal Texture of Quark and Lepton Mass Matrices with an Extended
  Flavor $2\leftrightarrow 3$ Symmetry   Against the conventional picture that the mass matrix forms in the quark
sectors will take somewhat different structures from those in the lepton
sectors, on the basis of an idea that all the mass matrices of quarks and
leptons have the same texture, a universal texture of quark and lepton mass
matrices is proposed by assuming a discrete symmetry Z_3 and an extended flavor
2\leftrightarrow 3 symmetry. The texture is described by three parameters
(including phase parameter). According to this ansatz, the neutrino masses and
mixings are investigated.

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The categories of this paper are: physics
2
The categories of this paper are: math
5
The categories of this paper are: gr-qc
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The categories of this paper are: comp-gas
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The categories of this paper are: math-ph
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The categories of this paper are: atom-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: mtrl-th
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The categories of this paper are: nucl-ex
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The categories of this paper are: quant-ph
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The categories of this paper are: adap-org
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The categories of this paper are: q-bio
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The categories of this paper are: dg-ga
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: hep-lat