The CUORE Experiment For The Search Of 0 Decay Lucia Cartegni

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The CUORE Experiment For The Search Of 0?ßß
DecayLucia Cartegni

• (A,Z)?(A,Z2)2e-

• Cryogenic Underground Observatory for Rare Events
• This experiment looks very promising for
  detection of neutrinoless double-beta decay

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Experimental Setup

• TeO2 bolometers
• T10 mK
• Te-130 isotopic abundance 34
• ßß peak 2.5 MeV
• Energy resolution 8keV
• Total mass 750 kg

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Background Reduction

• Underground
• Low natural radioactivity
• Nitrogen atmosphere
• Roman lead shields
• Polyethylene shields
• Faraday cage
• Materials shipped by sea
• Clean surfaces
• ?Background 0.2 counts/(keV kg year)

First Results

• CUORICINO experiment (40 kg)
• Lower limit for lifetime 1.8x1024 years
• Neutrino mass 0.2-1.1 eV

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Some References

• R. Ardito et al., Cuore A Cryogenic Underground
  Observatory for Rare Events, arXivhep-ex/0501010
  (2005)
• C. Arnaboldi et al., New Limit on the
  Neutrinoless ßß Decay of 130Te, Phys. Rev.
  Letters 95, 142501 (2005)
• S. Pirro et al., Further Developments in the
  CUORICINO Experiment, Nucl. Instr. And Meth. In
  Physics Research A 559, 352 (2006)
• F. T. Avignone et al, Next Generation double-beta
  decay experiments metrics for their evaluation,
  New Journal of Physics 7 (2005), www.njp.org/
• P. Vogel, Neutrinoless double beta decay,
  arXivhep-ph/0611243 (2006)