Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Neutrino Mass Matrix, Mixing and Oscillation   We investigate the phenomenological consequences of lepton mass matrices
originated from the family permutation symmetry and its suitable breakings.
Adopting the recently proposed new mass matrix for the charged lepton mass
matrix and the Majorana neutrino mass matrix considered before, we find that
the resulting lepton flavor mixing matrix is consistent with the current data
on various type of neutrino oscillation experiments except the Chlorine data
and LSND measurement and that three neutrinos are almost degenerate in mass.
Numerically the three neutrinos can account for about 50% of the hot dark
matter(HDM) when the neutrino mass matrix is constrained by the small angle MSW
solution for the solar neutrino problem, atmospheric neutrino data of the
Super-Kamiokande group, and the limitation on the electron-type neutrino mass
due to non-observation of neutrino-less double beta decays.

23
The categories of this paper are: solv-int
22
The categories of this paper are: chao-dyn
33
The categories of this paper are: plasm-ph
7
The categories of this paper are: hep-th
5
The categories of this paper are: gr-qc
27
The categories of this paper are: comp-gas
12
The categories of this paper are: nucl-th
9
The categories of this paper are: nlin
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
20
The categories of this paper are: acc-phys
19
The categories of this paper are: eess
30
The categories of this paper are: q-alg
1
The categories of this paper are: cs
31
The categories of this paper are: ao-sci
34
The categories of this paper are: chem-ph