Results from a search for the 0 v beta beta-decay of Te-130

Anno: 2008

Autori: Arnaboldi C., Artusa D.R., Avignone F. T. III, Balata M., Bandac I., Barucci M., Beeman J. W., Bellini F., Brofferio C., Bucci C., Capelli S., Carbone L., Cebrian S., Clemenza M., Cremonesi O., Creswick R. J., de Waard A., Di Domizio S., Dolinski M. J., Farach H. A., Fiorini E., Frossati G., Giachero A., Giuliani A., Gorla P., Guardincerri E., Gutierrez T. D., Haller E. E., Maruyama R. H., McDonald R. J., Nisi S., Nones C., Norman E.B., Nucciotti A., Olivieri E., Pallavicini M., Palmieri E., Pasca E., Pavan M., Pedretti M., Pessina G., Pirro S., Previtali E., Risegari L., Rosenfeld C., Sangiorgio S., Sisti M., Smith A. R., Torres L., Ventura G., Vignati M.

Affiliazione autori: Univ S Carolina, Dept Phys & Astron, Columbia, SC 29208 USA;
Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy;
Sez INFN Milano Bicocca, I-20126 Milan, Italy;
INFN Lab Nazl Gran Sasso, I-67010 Laquila, Italy;
Univ Florence, Dipartimento Fis, I-50019 Florence, Italy;
Sez INFN Firenze, I-50019 Florence, Italy;
Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA;
Univ Zaragoza, Lab Fis Nucl & Atlas Energias, E-50001 Zaragoza, Spain;
Leiden Univ, Kamerlingh Onnes Lab, NL-2300 RAQ Leiden, Netherlands;
Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy;
Sez INFN Genova, I-16146 Genoa, Italy;
Univ Insubria, Dipartimento Matemat & Fis, I-22100 Como, Italy;
Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA;
Lawrence Livermore Natl Lab, Livermore, CA 94551 USA;
Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA;
Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy;
Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy;
Sez INFN Roma, I-00185 Rome, Italy;
Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA;
Univ Wisconsin, Dept Phys, Madison, WI 53706 USA;
Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

Abstract: A detailed description of the CUORICINO Te-130 neutrinoless double-beta (0 v beta beta) decay experiment is given and recent results are reported. CUORICINO is an array of 62 tellurium oxide (TeO2) bolometers with an active mass of 40.7 kg. It is cooled to similar to 8-10 mK by a dilution refrigerator shielded from environmental radioactivity and eneergetic neutrons. It is running in the Laboratori Nazionali del Gran Sasso (LNGS) in Assergi, Italy. These data represent an exposure of 11.83 kg yr or 91 mole-years of Te-130. No evidence for 0 v beta beta-decay was observed and a limit of T-1/2(0v)(Te-130) >= 3.1 x 10(24) y (90% CL) is set. This corresponds to an upper limit on the effective mass, (m(v)), between 0.19 and 0.68 eV when analyzed with the many published nuclear structure calculations. In the context of these nuclear models, the values fall within the range corresponding to the claim of evidence of 0v beta beta-decay by H.V. Klapdor-kleingrothaus et al. The experiment continues to acquire data.

Giornale/Rivista: PHYSICAL REVIEW C

Volume: 78 (3)      Da Pagina: 035502  A: 035502

Maggiori informazioni: The CUORICINO Collaboration owes many thanks to the Directors and Staff of the Laboratori Nazionali del Gran Sasso over the years of the development, construction and operation of CUORICINO, and to the technical staffs of our Laboratories. The experiment was supported by the Instituto Nazionale di Fisica Nucleare (INFN), the Commission of the European Community under Contract No. HPRN-CT-2002-00322, by the U. S. Department of Energy under Contract No. DE-AC03-76-SF00098, and DOE W-7405-Eng-48, and by the National Science Foundation Grant Nos. PHY-0139294 and PHY-0500337. We also wish to thank the following colleagues for their help and advice: Juoni Suhonen, Osvaldo Civiterese, Petr Vogel, Amand Faessler. Vadim Rodin, and Fedor Simkovic, and Fernando Ferroni.
DOI: 10.1103/PhysRevC.78.035502

Citazioni: 240
dati da “WEB OF SCIENCE” (of Thomson Reuters) aggiornati al: 2024-06-16
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