Final results on the $$0 u \beta \beta $$ decay half-life limit of $$^{100}$$Mo from the CUPID-Mo experiment
Abstract
The CUPID-Mo experiment to search for 0$$ u \beta \beta $$ ν β β decay in $$^{100}$$ 100 Mo has been recently completed after about 1.5 years of operation at Laboratoire Souterrain de Modane (France). It served as a demonstrator for CUPID, a next generation 0$$ u \beta \beta $$ ν β β decay experiment. CUPID-Mo was comprised of 20 enriched $$\hbox {Li}_{{2}}$$ Li 2 $$^{100}$$ 100 $$\hbox {MoO}_4$$ MoO 4 scintillating calorimeters, each with a mass of $$\sim 0.2$$ ∼ 0.2 kg, operated at $$\sim 20$$ ∼ 20 mK. We present here the final analysis with the full exposure of CUPID-Mo ($$^{100}$$ 100 Mo exposure of 1.47 $$\hbox {kg} \times \hbox {year}$$ kg × year ) used to search for lepton number violation via 0$$ u \beta \beta $$ ν β β decay. We report on various analysis improvements since the previous result on a subset of data, reprocessing all data with these new techniques. We observe zero events in the region of interest and set a new limit on the $$^{100}$$ 100 Mo 0$$ u \beta \beta $$ ν β β decay half-life of $$T_{1/2}^{0 u }$$ T 1 / 2 0 ν $$> {1.8}\times 10^{24}$$ > 1.8 × 10 24 year (stat. + syst.) at 90% CI. Under the light Majorana neutrino exchange mechanism this corresponds to an effective Majorana neutrino mass of $$\left$$ m β β $$ ( 0.28 - 0.49 ) eV, dependent upon the nuclear matrix element utilized.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 15, 2022
- Source ID
- 10.1140/epjc/s10052-022-10942-5
Entities
People
- A. Cazes
- A. Juillard
- A. Rojas
- A. S. Barabash
- A. S. Zolotarova
- Andrea Giuliani
- B. K. Fujikawa
- B. Paul
- B. Schmidt
- B. Welliver
- C. Augier
- C. Nones
- C. Tomei
- D. Chiesa
- D. L. Helis
- D. V. Poda
- E. B. Norman
- E. Olivieri
- E. P. Makarov
- E. Previtali
- E. Yakushev
- F. A. Danevich
- F. Bellini
- F. Ferri
- G. Benato
- G. Pessina
- H. Khalife
- H. Z. Huang
- Hsuan-Tung Peng
- I. Dafinei
- J. A. Scarpaci
- J. Billard
- J. Gascon
- J. Johnston
- J. L. Ouellet
- K. Eitel
- L. Bergé
- L. Cardani
- L. Dumoulin
- L. Gironi
- L. Imbert
- L. Marini
- L. Pagnanini
- L. Pattavina
- L. Vagneron
- L. Winslow
- Lang Ma
- M. Beretta
- M. Chapellier
- M. De Jesus
- M. Gros
- M. Kleifges
- M. Pavan
- M. Velázquez
- M. Xue
- M. Zarytskyy
- N. Casali
- O. G. Polischuk
- P. De Marcillac
- P. Loaiza
- R. Mariam
- Rulin Huang
- S. I. Konovalov
- S. Marnieros
- S. Pirro
- S. Pozzi
- S. Rozov
- T. Dixon
- Th. Redon
- V. D. Grigorieva
- V. I. Tretyak
- V. I. Umatov
- V. N. Shlegel
- V. Sanglard
- V. V. Kobychev
- Vibhor Singh
- X.-f. Navick
- Yangyang Shen
- Yu. A. Borovlev
- Yu. G. Kolomensky
Organizations
- Agence Nationale de la Recherche
- Marie Skłodowska-Curie Actions
- National Academy of Sciences of Ukraine
- National Research Fund of Ukraine
- Office of Nuclear Physics
- Russian Science Foundation