Cosmology is making impressive progress and it is producing stringent bounds on the sum of the neutrino masses Σ, a parameter of great importance for the current laboratory experiments. In this letter, we exploit the potential relevance of the analysis of Palanque-Delabrouille et al. [JCAP 02 (2015) 045] to the neutrinoless double beta decay (0ν β β) search. This analysis indicates small values for the lightest neutrino mass, since the authors find Σ < 84 meV at 1σ C.L., and provides a 1σ preference for the normal hierarchy. The allowed values for the Majorana effective mass, probed by 0ν β β, turn out to be < 75 meV at 3σ C.L. and lower down to less than 02 meV at 1σ C.L. . If this indication is confirmed, the impact on the 0ν β β experiments will be tremendous since the possibility of detecting a signal will be out of the reach of the next generation of experiments.

Dell'Oro, S., Marcocci, S., Viel, M., Vissani, F. (2015). The contribution of light Majorana neutrinos to neutrinoless double beta decay and cosmology. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015(12) [10.1088/1475-7516/2015/12/023].

The contribution of light Majorana neutrinos to neutrinoless double beta decay and cosmology

Dell'Oro S.
;
2015

Abstract

Cosmology is making impressive progress and it is producing stringent bounds on the sum of the neutrino masses Σ, a parameter of great importance for the current laboratory experiments. In this letter, we exploit the potential relevance of the analysis of Palanque-Delabrouille et al. [JCAP 02 (2015) 045] to the neutrinoless double beta decay (0ν β β) search. This analysis indicates small values for the lightest neutrino mass, since the authors find Σ < 84 meV at 1σ C.L., and provides a 1σ preference for the normal hierarchy. The allowed values for the Majorana effective mass, probed by 0ν β β, turn out to be < 75 meV at 3σ C.L. and lower down to less than 02 meV at 1σ C.L. . If this indication is confirmed, the impact on the 0ν β β experiments will be tremendous since the possibility of detecting a signal will be out of the reach of the next generation of experiments.
Articolo in rivista - Articolo scientifico
double beta decay; neutrino masses from cosmology;
English
2015
2015
12
023
none
Dell'Oro, S., Marcocci, S., Viel, M., Vissani, F. (2015). The contribution of light Majorana neutrinos to neutrinoless double beta decay and cosmology. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS, 2015(12) [10.1088/1475-7516/2015/12/023].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/472459
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