Experimental searches of neutrinoless double beta decay

Abstract

Neutrinoless double decay is a unique probe for lepton number conservation and neutrino properties. It allows to investigate the Dirac/Majorana nature of the neutrinos and their absolute mass scale (hierarchy problem) with unprecedented sensitivity. A number of experiments are presently under preparation to cover the quasi-degenerate region of the neutrino mass spectrum. Improved sensitivities are however required to sound the so-called inverted hierarchy region. This is a real challenge faced by a number of new proposed projects, based either on large expansions of the present experiments or on new ideas top improve the technical performance or reduce the background contributions. A review of the most relevant ongoing experiments is given. The most relevant parameters contributing to the experimental sensitivity are discussed and a critical comparison of the future projects is proposed.

5 pages - 2 tables - 1 figure; NOW2012 conference, Conca Specchiulla (Otranto, Lecce, Italy), September 9-16, 2012

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Cited by in corpus (7)

• Search for Zero-Neutrino Double Beta Decay in 76Ge with the Majorana Demonstrator
• A Search for Neutrinoless Double-Beta Decay in ${}^{76}$Ge with 26 kg-yr of Exposure from the MAJORANA DEMONSTRATOR
• First array of enriched Zn${}^{82}$Se bolometers to search for double beta decay
• SO(10)-inspired solution to the problem of the initial conditions in leptogenesis
• Initial Results from the MAJORANA DEMONSTRATOR
• Scaling ansatz with texture zeros in linear seesaw
• The Majorana Demonstrator Status and Preliminary Results