Journal
PHYSICAL REVIEW LETTERS
Volume 126, Issue 18, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.126.181802
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Funding
- ANR (France)
- CEA
- P2IO LabEx
- Istituto Nazionale di Fisica Nucleare
- Russian Science Foundation (Russia)
- National Research Foundation (Ukraine)
- U.S. Department of Energy (DOE) Office of Science
- DOE Office of Science, Office of Nuclear Physics
- National Science Foundation (USA)
- France-Berkeley fund
- MISTI-France fund
- Chateaubriand Fellowship of the Office for Science and Technology of the Embassy of France in the United States
- National Academy of Sciences of Ukraine
- BSM-Nu project
- IN2P3
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The CUPID-Mo experiment at the Laboratoire Souterrain de Modane in France is a demonstrator for the next-generation ton-scale bolometric 0 nu beta beta experiment. With more than one year of operation and Mo-100 exposure, a new limit on the half-life of 0 nu beta beta decay in Mo-100 has been reported, indicating an effective Majorana neutrino mass dependent on the nuclear matrix element in the light Majorana neutrino exchange interpretation.
The CUPID-Mo experiment at the Laboratoire Souterrain de Modane (France) is a demonstrator for CUPID, the next-generation ton-scale bolometric 0 nu beta beta experiment. It consists of a 4.2 kg array of 20 enriched (Li2MoO4)-Mo-100 scintillating bolometers to search for the lepton-number-violating process of 0 nu beta beta decay in Mo-100. With more than one year of operation (Mo-100 exposure of 1.17 kg x yr for physics data), no event in the region of interest and, hence, no evidence for 0 nu beta beta is observed. We report a new limit on the half-life of 0 nu beta beta decay in Mo-100 of T-1/2 > 1.5 x 10(24) yr at 90% C.I. The limit corresponds to an effective Majorana neutrino mass < m(beta beta)> < (0.31-0.54) eV, dependent on the nuclear matrix element in the light Majorana neutrino exchange interpretation.
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