Consequences of neutrinoless double beta decay and WMAP

Abstract

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.

15 pages latex with 1 figure

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Cited by in corpus (7)

• Search for neutrinoless double beta decay with enriched 76Ge in Gran Sasso 1990-2003
• Data Acquisition and Analysis of the 76Ge Double Beta Experiment in Gran Sasso 1990-2003
• High scale mixing unification and large neutrino mixing angles
• Support of Evidence for Neutrinoless Double Beta Decay
• Neutrinoless double beta decay and QCD corrections
• Charged Higgs contribution to $0\nu 2\beta$ decay
• $\rho$ exchange contribution to neutrinoless double beta decay