Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Consequences of neutrinoless double beta decay and WMAP   Observation of the neutrinoless double beta decay ($\0n$) has established
that there is lepton number violation in nature and the neutrino masses are
Majorana in nature. It also gives the absolute mass of the neutrinos and
discriminates between different models of neutrino masses. The allowed amount
of lepton number violation puts severe constraints on some possible new physics
beyond the standard model. The recent results from WMAP are consistent with the
consequences of the neutrinoless double beta decay. They improve some of these
constraints very marginally, which we shall summarise here. We mention the new
physics which are not affected by WMAP and could make both these limits from
the neutrinoless double beta decay and WMAP consistent.

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The categories of this paper are: adap-org
34
The categories of this paper are: chem-ph
31
The categories of this paper are: ao-sci
18
The categories of this paper are: econ
24
The categories of this paper are: dg-ga
37
The categories of this paper are: supr-con
10
The categories of this paper are: q-bio
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The categories of this paper are: bayes-an
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The categories of this paper are: chao-dyn
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The categories of this paper are: quant-ph
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The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
35
The categories of this paper are: mtrl-th
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The categories of this paper are: alg-geom
25
The categories of this paper are: patt-sol
17
The categories of this paper are: q-fin