Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Theory of flavors: String compactification   We present a calculating method for the quark and lepton mixing angles. After
a general discussion in field theoretic models, we present a working model from
a string compactification through $Z_{12-I}$ orbifold compactification. It is
beyond presenting just three families of the standard model but is the first
example from string compactification successfully fitting to the observed data.
Assuming that all Yukawa couplings from string compactification are real, we
also comment on a relation between the CP phases in the Jarlskog determinants
obtained from the CKM and PMNS matrices. The flipped SU(5) model leads to the
doublet-triplet splitting and possible proton decay operators. It is shown that
the vacuum expectation values can be tuned such that the proton lifetime is
long enough.

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The categories of this paper are: astro-ph
32
The categories of this paper are: atom-ph
8
The categories of this paper are: hep-ex
20
The categories of this paper are: acc-phys
4
The categories of this paper are: cond-mat
26
The categories of this paper are: bayes-an
18
The categories of this paper are: econ
15
The categories of this paper are: nucl-ex
27
The categories of this paper are: comp-gas
33
The categories of this paper are: plasm-ph
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The categories of this paper are: nucl-th
31
The categories of this paper are: ao-sci
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The categories of this paper are: physics
19
The categories of this paper are: eess
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The categories of this paper are: gr-qc
34
The categories of this paper are: chem-ph