2003/04/03 by H. V. Klapdor-Kleingrothaus, U. Sarkar · 1 citation
Physics and Astronomy · #CMB cold spot #Double beta decay #Lepton #Lepton number #MAJORANA #Neutrino #Neutrino Physics Research #Particle physics theoretical and experimental studies #Physics beyond the Standard Model #Radioactive Decay and Measurement Techniques #hep-ph
paper · pdf · doi:10.1142/s0217732303011988
published as Mod.Phys.Lett.A18:2243-2254,2003 · 15 pages latex with 1 figure
arxiv created 2003/04/03 · openalex publication_date 2003/10/20 · arxiv updated 2014/11/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Observation of the neutrinoless double beta decay (0νββ) 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 summarize here. We mention the new physics which is not affected by WMAP, and which could make the limits from the neutrinoless double beta decay even consistent with much tighter future cosmological limits.