Consequences of neutrinoless double beta decay and WMAP

Details Consequences of neutrinoless double beta decay and WMAP Consequences of neutrinoless double beta decay and WMAP

2003-04-03

arxiv.org/abs/hep-ph/0304032v1

Mod.Phys.Lett. A18 (2003) 2243-2254

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages latex with 1 figure

Scientific paper

10.1142/S0217732303011988

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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