New results from the CUORE experiment

Author:

Nutini I.12,Adams D. Q.3,Alduino C.3,Alfonso K.4,Avignone F. T.3,Azzolini O.5,Bari G.6,Bellini F.78,Benato G.9,Beretta M.10,Biassoni M.1,Branca A.12,Brofferio C.12,Bucci C.9,Camilleri J.11,Caminata A.12,Campani A.1213,Canonica L.914,Cao X. G.15,Capelli S.12,Cappelli L.91016,Cardani L.8,Carniti P.12,Casali N.8,Celi E.917,Chiesa D.12,Clemenza M.12,Copello S.1213,Cremonesi O.1,Creswick R. J.3,D’Addabbo A.917,Dafinei I.8,Dell’Oro S.12,Di Domizio S.1213,Dompè V.917,Fang D. Q.15,Fantini G.78,Faverzani M.12,Ferri E.12,Ferroni F.817,Fiorini E.12,Franceschi M. A.18,Freedman S. J.1016,Fu S. H.15,Fujikawa B. K.16,Giachero A.12,Gironi L.12,Giuliani A.19,Gorla P.9,Gotti C.1,Gutierrez T. D.20,Han K.21,Hansen E. V.10,Heeger K. M.22,Huang R. G.10,Huang H. Z.4,Johnston J.14,Keppel G.5,Kolomensky Yu. G.1016,Ligi C.18,Ma L.4,Ma Y. G.15,Marini L.1016,Maruyama R. H.22,Mayer D.14,Mei Y.16,Moggi N.623,Morganti S.8,Napolitano T.18,Nastasi M.12,Nikkel J.22,Nones C.24,Norman E. B.2526,Nucciotti A.12,O’Donnell T.11,Ouellet J. L.14,Pagan S.22,Pagliarone C. E.927,Pagnanini L.917,Pallavicini M.1213,Pattavina L.9,Pavan M.12,Pessina G.1,Pettinacci V.8,Pira C.5,Pirro S.9,Pozzi S.12,Previtali E.12,Puiu A.917,Rosenfeld C.3,Rusconi C.39,Sakai M.10,Sangiorgio S.25,Schmidt B.16,Scielzo N. D.25,Sharma V.11,Singh V.10,Sisti M.1,Speller D.28,Surukuchi P. T.22,Taffarello L.29,Terranova F.12,Tomei C.8,Vetter K. J.1016,Vignati M.8,Wagaarachchi S. L.1016,Wang B. S.2526,Welliver B.16,Wilson J.3,Wilson K.3,Winslow L. A.14,Zimmermann S.30,Zucchelli S.623

Affiliation:

1. INFN – Sezione di Milano Bicocca, Milano I-20126, Italy

2. Dipartimento di Fisica, Università di Milano-Bicocca, Milano I-20126, Italy

3. Department of Physics and Astronomy, University of South Carolina, Columbia, SC 29208, USA

4. Department of Physics and Astronomy, University of California, Los Angeles, CA 90095, USA

5. INFN – Laboratori Nazionali di Legnaro, Legnaro (Padova) I-35020, Italy

6. INFN – Sezione di Bologna, Bologna I-40127, Italy

7. Dipartimento di Fisica, Sapienza Università di Roma, Roma I-00185, Italy

8. INFN – Sezione di Roma, Roma I-00185, Italy

9. INFN – Laboratori Nazionali del Gran Sasso, Assergi (L’Aquila) I-67100, Italy

10. Department of Physics, University of California, Berkeley, CA 94720, USA

11. Center for Neutrino Physics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA

12. INFN – Sezione di Genova, Genova I-16146, Italy

13. Dipartimento di Fisica, Università di Genova, Genova I-16146, Italy

14. Massachusetts Institute of Technology, Cambridge, MA 02139, USA

15. Key Laboratory of Nuclear Physics and Ion-beam Application (MOE), Institute of Modern Physics, Fudan University, Shanghai 200433, China

16. Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

17. Gran Sasso Science Institute, L’Aquila I-67100, Italy

18. INFN – Laboratori Nazionali di Frascati, Frascati (Roma) I-00044, Italy

19. Université Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay, France

20. Physics Department, California Polytechnic State University, San Luis Obispo, CA 93407, USA

21. INPAC and School of Physics and Astronomy, Shanghai Jiao Tong University;, Shanghai Laboratory for Particle Physics and Cosmology, Shanghai 200240, China

22. Wright Laboratory, Department of Physics, Yale University, New Haven, CT 06520, USA

23. Dipartimento di Fisica e Astronomia, Alma Mater Studiorum – Università di Bologna, Bologna I-40127, Italy

24. IRFU, CEA, Université Paris-Saclay, F-91191 Gif-sur-Yvette, France

25. Lawrence Livermore National Laboratory, Livermore, CA 94550, USA

26. Department of Nuclear Engineering, University of California, Berkeley, CA 94720, USA

27. Dipartimento di Ingegneria Civile e Meccanica, Università degli Studi di Cassino e del Lazio Meridionale, Cassino I-03043, Italy

28. Department of Physics and Astronomy, The Johns Hopkins University, 3400 North Charles Street Baltimore, MD, 21211, USA

29. INFN – Sezione di Padova, Padova I-35131, Italy

30. Engineering Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA

Abstract

The Cryogenic Underground Observatory for Rare Events (CUORE) is the first bolometric experiment searching for neutrino-less double-beta (0[Formula: see text]) decay that has been able to reach the one-ton scale. The detector, located at the Laboratori Nazionali del Gran Sasso in Italy, consists of an array of 988 TeO2 crystals arranged in a compact cylindrical structure of 19 towers. Following the completion of the detector construction in August 2016, CUORE began its first physics data run in 2017 at a base temperature of about 10 mK. Following multiple optimization campaigns in 2018, CUORE is currently in stable operating mode. In 2019, CUORE released its second result of the search for 0[Formula: see text] corresponding to a TeO2 exposure of 372.5 kg[Formula: see text]⋅[Formula: see text]yr and a median exclusion sensitivity to a 130Te 0[Formula: see text] decay half-life of [Formula: see text] yr. We find no evidence for 0[Formula: see text] decay and set a 90% C.I. Bayesian lower limit of [Formula: see text] yr on the 130Te 0[Formula: see text] decay half-life. We present the current status of CUORE’s search for 0[Formula: see text]. We give an update of the CUORE background model and the measurement of the 130Te two neutrino double-beta (2[Formula: see text]) decay half-life. Eventually, we show the preliminary results on half-life limits from the analysis of 130Te 0[Formula: see text] and 2[Formula: see text] decay to the first 0[Formula: see text] excited state of [Formula: see text]Xe.

Publisher

World Scientific Pub Co Pte Ltd

Subject

Astronomy and Astrophysics,Nuclear and High Energy Physics,Atomic and Molecular Physics, and Optics

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