Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: SU(3) family symmetry and neutrino bi-tri-maximal mixing   The observed large mixing angles in the lepton sector may be the first signal
for the presence of a non-Abelian family symmetry. However, to obtain the
significant differences between the mixing of the neutrino and charged fermion
sectors, the vacuum expectation values involved in the breaking of such a
symmetry in the two sectors must be misaligned. We investigate how this can be
achieved in models with an SU(3) family symmetry consistent with an underlying
GUT. We show that such misalignment can be achieved naturally via the see-saw
mechanism. We construct a specific example in which the vacuum (mis)alignment
is guaranteed by additional symmetries. This model generates a fermion mass
structure consistent with all quark and lepton masses and mixing angles.
Neutrino mixing is close to bi-tri-maximal mixing.

1
The categories of this paper are: cs
26
The categories of this paper are: bayes-an
22
The categories of this paper are: chao-dyn
34
The categories of this paper are: chem-ph
7
The categories of this paper are: hep-th
11
The categories of this paper are: hep-lat
25
The categories of this paper are: patt-sol
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
33
The categories of this paper are: plasm-ph
28
The categories of this paper are: alg-geom
16
The categories of this paper are: stat
29
The categories of this paper are: funct-an
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
3
The categories of this paper are: physics