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      Sensitivity and Discovery Potential of CUORE to Neutrinoless Double-Beta Decay

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          Abstract

          We present a study of the sensitivity and discovery potential of CUORE, a bolometric double-beta decay experiment under construction at the Laboratori Nazionali del Gran Sasso in Italy. Two approaches to the computation of experimental sensitivity for various background scenarios are presented, and an extension of the sensitivity formulation to the discovery potential case is also discussed. Assuming a background rate of 10^-2 cts/(keV kg y), we find that, after 5 years of live time, CUORE has a 1 sigma sensitivity to the neutrinoless double-beta decay half-life of T_1/2(1 sigma) = 1.6 \times 10^26 y and thus a potential to probe the effective Majorana neutrino mass down to 40-100 meV; the sensitivity at 1.64 sigma, which corresponds to 90% C.L., will be T_1/2(1.64 sigma) = 9.5 \times 10^25 y. This range is compared with the claim of observation of neutrinoless double-beta decay in 76Ge and the preferred range of the neutrino mass parameter space from oscillation results.

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          Author and article information

          Journal
          2011-09-02
          2013-03-20
          Article
          1109.0494
          df8f28ee-b63f-4588-9169-bf4ec9655c13

          http://arxiv.org/licenses/nonexclusive-distrib/1.0/

          History
          Custom metadata
          14 pages, 6 figures, revision for new submission to Astroparticle Physics
          nucl-ex hep-ex hep-ph

          High energy & Particle physics,Nuclear physics
          High energy & Particle physics, Nuclear physics

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