Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining four neutrino mass patterns from neutrinoless double beta
  decay   All existing data on neutrino oscillations (including those from the LSND
experiment) imply a four neutrino scheme with six different allowed mass
patterns. Some of the latter are shown to be disfavored by using a conservative
upper bound on the $\beta beta 0 \nu$ nuclear decay rate, if neutrinos are
assumed to be Majorana particles. Comparisons are also made with restrictions
from tritium $\beta$-decay and cosmology.

32
The categories of this paper are: atom-ph
13
The categories of this paper are: quant-ph
3
The categories of this paper are: physics
27
The categories of this paper are: comp-gas
36
The categories of this paper are: cmp-lg
2
The categories of this paper are: math
20
The categories of this paper are: acc-phys
29
The categories of this paper are: funct-an
23
The categories of this paper are: solv-int
26
The categories of this paper are: bayes-an
12
The categories of this paper are: nucl-th
14
The categories of this paper are: math-ph
5
The categories of this paper are: gr-qc
9
The categories of this paper are: nlin
17
The categories of this paper are: q-fin
15
The categories of this paper are: nucl-ex