Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Relating quarks and leptons without grand-unification   In combination with supersymmetry, flavor symmetry may relate quarks with
leptons, even in the absence of a grand-unification group. We propose an
SU(3)xSU(2)xU(1) model where both supersymmetry and the assumed A4 flavor
symmetries are softly broken, reproducing well the observed fermion mass
hierarchies and predicting: (i) a relation between down-type quarks and charged
lepton masses, and (ii) a correlation between the Cabibbo angle in the quark
sector, and the reactor angle characterizing CP violation in neutrino
oscillations.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
36
The categories of this paper are: cmp-lg
22
The categories of this paper are: chao-dyn
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
23
The categories of this paper are: solv-int
16
The categories of this paper are: stat
37
The categories of this paper are: supr-con
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
2
The categories of this paper are: math
11
The categories of this paper are: hep-lat
8
The categories of this paper are: hep-ex
31
The categories of this paper are: ao-sci
10
The categories of this paper are: q-bio