{"paper":{"title":"Evidence of Single State Dominance in the Two-Neutrino Double-$\\beta$ Decay of Se-82 with CUPID-0","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Cruciani, A. Giuliani, A. Puiu, A. Zolotarova, C. Brofferio, C. Bucci, C. Gotti, C. Nones, C. Rusconi, C. Tomei, D. Chiesa, D. Orlandi, E. Previtali, F. Bellini, F. Ferroni, G. Keppel, G. Pessina, I. Dafinei, J. Kotila, J.W. Beeman, K. Sch\\\"affner, L. Cardani, L. Gironi, L. Pagnanini, L. Pattavina, M. Beretta, M. Biassoni, M. Clemenza, M. Martinez, M. Nastasi, M. Pallavicini, M. Pavan, M. Vignati, N. Casali, O. Azzolini, O. Cremonesi, P. Carniti, P. Gorla, S. Capelli, S. Di Domizio, S. Nagorny, S. Nisi, S. Pirro, S. Pozzi, V. Pettinacci","submitted_at":"2019-09-08T07:12:26Z","abstract_excerpt":"We report on the measurement of the two-neutrino double-$\\beta$ decay of $^{82}$Se performed for the first time with cryogenic calorimeters, in the framework of the CUPID-0~experiment. With an exposure of 9.95 kg$\\times$yr of Zn$^{82}$Se, we determine the two-neutrino double-$\\beta$ decay half-life of $^{82}$Se with an unprecedented precision level, $T_{1/2}^{2\\nu} = [8.60 \\pm 0.03 \\textrm{(stat.)}~^{+0.17}_{-0.10} \\textrm{(syst.)}] \\times 10^{19}~\\textrm{yr}$. The very high signal-to-background ratio, along with the detailed reconstruction of the background sources allowed us to identify the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1909.03397","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1909.03397/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}