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Physics Letters B 710 (2012) 318-323
A next-generation neutrinoless double beta decay experiment based on ZnMoO4 scintillating bolometers
J. W. Beeman, F. A. Danevich, V. Ya. Degoda, E. N. Galashov, A. Giuliani1, V. V. Kobychev, M. Mancuso, S. Marnieros1, C. Nones1, E. Olivieri1, G. Pessina, C. Rusconi, V. N. Shlegel, V. I. Tretyak, Ya. V. Vasiliev

The search for neutrinoless double β decay probes lepton number conservation with high sensitivity and investigates the neutrino nature and mass scale. Experiments presently in preparation will cover the quasi-degeneracy region of the neutrino mass pattern. Probing the inverted hierarchy region requires improved sensitivities and next-generation experiments, based either on large expansions of the present searches or on new ideas. We examine here a novel technology relying on ZnMoO4 scintillating bolometers, which can provide an experiment with background close to zero in the ton × year exposure scale. The promising performance of a pilot detector is presented, both in terms of energy resolution and background control. A preliminary study of the sensitivities of future experiments shows that the inverted hierarchy region is within the reach of the technique here proposed. A realistic phased approach program towards a next-generation search is presented and briefly discussed.
1 :  CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Physique/Physique des Hautes Energies - Expérience

Physique/Physique/Instrumentations et Détecteurs
Double beta decay – Neutrino mass – Low background – Bolometrique technique – Scintillation
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