Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: On the D-branes Standard-like Models   Based on the low-energy effective field theory of D-branes, the mass spectrum
of an extended Standard Model with two-Higgs doublets used to generate all the
mass terms is investigated. Besides the gauge bosons, the fermion mass spectrum
is weighted by the Higgs VEVs with a partial hierarchy and the smallness of
neutrino masses is exhibited. With reference to the known data, the involved
scales of the model are approached.

9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
12
The categories of this paper are: nucl-th
1
The categories of this paper are: cs
16
The categories of this paper are: stat
4
The categories of this paper are: cond-mat
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
30
The categories of this paper are: q-alg
32
The categories of this paper are: atom-ph
25
The categories of this paper are: patt-sol
10
The categories of this paper are: q-bio
23
The categories of this paper are: solv-int
21
The categories of this paper are: adap-org