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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. Giuliani 1 V. V. Kobychev M. Mancuso S. Marnieros 1 C. Nones 1 E. Olivieri 2 G. Pessina C. Rusconi V. N. Shlegel V. I. Tretyak Ya. V. Vasiliev
1 CSNSM PS1
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse, CSNSM - Centre de Sciences Nucléaires et de Sciences de la Matière
2 CSNSM INSTR
CSNSM - Centre de Spectrométrie Nucléaire et de Spectrométrie de Masse
Abstract : 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.
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Submitted on : Wednesday, May 30, 2012 - 2:13:34 PM
Last modification on : Wednesday, October 14, 2020 - 4:11:06 AM

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J. W. Beeman, F. A. Danevich, V. Ya. Degoda, E. N. Galashov, A. Giuliani, et al.. A next-generation neutrinoless double beta decay experiment based on ZnMoO4 scintillating bolometers. Physics Letters B, Elsevier, 2012, 710, pp.318-323. ⟨10.1016/J.PHYSLETB.2012.03.009⟩. ⟨in2p3-00702498⟩

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