{"paper":{"title":"Letter of Intent for Double-CHOOZ: a Search for the Mixing Angle Theta13","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A.Di Vacri, A.Etenko, A.Guertin, A.Letourneau, A.Milsztajn, B.Courty, C.Buck, C.Cattadori, C.Hagner, Ch.Grieb, Ch.Lendvai, D.Kryn, D.Motta, D.Vignaud, E.Yanovich, F.Ardellier, F.Dalnoki-Veress, F.Marie, F.von Feilitzsch, F.X.Hartmann, G.Mention, H.de Kerret, I.Barabanov, J.C.Barriere, J.Jochum, J.Martino, J.P.Meyer, L.Bezrukov, L.Oberauer, L.Pandola, L.Scola, M.Bauer, M.Cribier, M.Fallot, M.Goeger, M.Lindner, M.Obolensky, M.Skorokhvatov, N.Danilov, P.Huber, S.Schoenert, S.Scholl, S.Sukhotin, Th.Lasserre, T.Kirchner, T.Lachenmaier, T.Schwetz, U.Schwan, W.Hampel, W.Potzel, W.Winter, Y.S.Krylov","submitted_at":"2004-05-14T12:54:38Z","abstract_excerpt":"Tremendous progress has been achieved in neutrino oscillation physics during the last few years. However, the smallness of the $\\t13$ neutrino mixing angle still remains enigmatic. The current best constraint comes from the CHOOZ reactor neutrino experiment $\\s2t13 < 0.2$ (at 90% C.L., for $\\adm2=2.0 10^{-3} \\text{eV}^2$). We propose a new experiment on the same site, Double-CHOOZ, to explore the range of $\\s2t13$ from 0.2 to 0.03, within three years of data taking. The improvement of the CHOOZ result requires an increase in the statistics, a reduction of the systematic error below one percent"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0405032","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"}