With or without ν? Hunting for the seed of the matter-antimatter
asymmetry
CUORE Collaboration,D. Q. Adams,C. Alduino,K. Alfonso,F. T. Avignone III,O. Azzolini,G. Bari,F. Bellini,G. Benato,M. Beretta,M. Biassoni,A. Branca,C. Brofferio,C. Bucci,J. Camilleri,A. Caminata,A. Campani,J. Cao,S. Capelli,C. Capelli,L. Cappelli,L. Cardani,P. Carniti,N. Casali,E. Celi,D. Chiesa,M. Clemenza,O. Cremonesi,R. J. Creswick,A. D'Addabbo,I. Dafinei,F. Del Corso,S. Dell'Oro,S. Di Domizio,S. Di Lorenzo,T. Dixon,V. Dompè,D. Q. Fang,G. Fantini,M. Faverzani,E. Ferri,F. Ferroni,E. Fiorini,M. A. Franceschi,S. J. Freedman,S. H. Fu,B. K. Fujikawa,S. Ghislandi,A. Giachero,M. Girola,L. Gironi,A. Giuliani,P. Gorla,C. Gotti,P. V. Guillaumon,T. D. Gutierrez,K. Han,E. V. Hansen,K. M. Heeger,D. L. Helis,H. Z. Huang,G. Keppel,Yu. G. Kolomensky,R. Kowalski,R. Liu,L. Ma,Y. G. Ma,L. Marini,R. H. Maruyama,D. Mayer,Y. Mei,M. N. Moore,T. Napolitano,M. Nastasi,C. Nones,E. B. Norman,A. Nucciotti,I. Nutini,T. O'Donnell,M. Olmi,B. T. Oregui,J. L. Ouellet,S. Pagan,C. E. Pagliarone,L. Pagnanini,M. Pallavicini,L. Pattavina,M. Pavan,G. Pessina,V. Pettinacci,C. Pira,S. Pirro,I. Ponce,E. G. Pottebaum,S. Pozzi,E. Previtali,A. Puiu,S. Quitadamo,A. Ressa,C. Rosenfeld,B. Schmidt,V. Sharma,V. Singh,M. Sisti,D. Speller,P. T. Surukuchi,L. Taffarello,C. Tomei,J. A Torres,K. J. Vetter,M. Vignati,S. L. Wagaarachchi,B. Welliver,J. Wilson,K. Wilson,L. A. Winslow,S. Zimmermann,S. Zucchelli
arxiv（2024）
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摘要
The matter-antimatter asymmetry underlines the incompleteness of the current
understanding of particle physics. Neutrinoless double-beta (0νββ)
decay may help explain this asymmetry, while unveiling the Majorana nature of
the neutrino. The CUORE experiment searches for 0νββ decay of
^130Te using a tonne-scale cryogenic calorimeter operated at milli-kelvin
temperatures. We report no evidence for 0νββ decay and place a
lower limit on the half-life of T_1/2 > 3.8 × 10^25 years (90
C.I.) with over 2 tonne·year TeO_2 exposure. The tools and techniques
developed for this result and the 5 year stable operation of nearly 1000
detectors demonstrate the infrastructure for a next-generation experiment
capable of searching for 0νββ decay across multiple isotopes.
