Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On fermion mass hierarchy with extra dimensions   Recently various phenomenological implications of the existence of extra
space-time dimensions have been investigated. In this letter, we construct a
model with realistic fermion mass hierarchy with (large) extra dimensions
beyond the usual four dimensions. In this model, it is assumed that some matter
fields live in the bulk and the others are confined on our four dimensional
wall. It can naturally reproduce the quark and lepton mass hierarchy and mixing
angles without any symmetry arguments. We also discuss some possibilities of
obtaining suitable neutrino masses and mixings for the solar and atmospheric
neutrino problems.

3
The categories of this paper are: physics
19
The categories of this paper are: eess
2
The categories of this paper are: math
13
The categories of this paper are: quant-ph
30
The categories of this paper are: q-alg
16
The categories of this paper are: stat
15
The categories of this paper are: nucl-ex
18
The categories of this paper are: econ
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
14
The categories of this paper are: math-ph
6
The categories of this paper are: astro-ph
7
The categories of this paper are: hep-th
37
The categories of this paper are: supr-con
27
The categories of this paper are: comp-gas