Background-independent measurement of $θ_{13}$ in Double Chooz
Creators: name: Abe, Y.
name: Anjos, J. C. dos
name: Barriere, J. C.
name: Baussan, E.
name: Bekman, I.
name: Bergevin, M.
name: Bezerra, T. J. C.
name: Bezrukov, L.
name: Blucher, E.
name: Buck, C.
name: Busenitz, J.
name: Cabrera, A.
name: Caden, E.
name: Camilleri, L.
name: Carr, R.
name: Cerrada, M.
name: Chang, P. -J.
name: Chauveau, E.
name: Chimenti, P.
name: Collin, A. P.
name: Conover, E.
name: Conrad, J. M.
name: Crespo-Anadón, J. I.
name: Crum, K.
name: Cucoanes, A.
name: Damon, E.
name: Dawson, J. V.
name: Dietrich, D.
name: Djurcic, Z.
name: Dracos, M.
name: Elnimr, M.
name: Etenko, A.
name: Fallot, M.
name: von Feilitzsch, F.
name: Felde, J.
name: Fernandes, S. M.
name: Fischer, V.
name: Franco, D.
name: Franke, M.
name: Furuta, H.
name: Gil-Botella, I.
name: Giot, L.
name: Göger-Neff, M.
name: Gonzalez, L. F. G.
name: Goodenough, L.
name: Goodman, M. C.
name: Grant, C.
name: Haag, N.
name: Hara, T.
name: Haser, J.
name: Hofmann, M.
name: Horton-Smith, G. A.
name: Hourlier, A.
name: Ishitsuka, M.
name: Jochum, J.
name: Jollet, C.
name: Kaether, F.
name: Kalousis, L. N.
name: Kamyshkov, Y.
name: Kaplan, D. M.
name: Kawasaki, T.
name: Kemp, E.
name: de Kerret, H.
name: Konno, T.
name: Kryn, D.
name: Kuze, M.
name: Lachenmaier, T.
name: Lane, C. E.
name: Lasserre, T.
name: Letourneau, A.
name: Lhuillier, D.
name: Lima, H. P.
name: Lindner, M.
name: López-Castaño, J. M.
name: LoSecco, J. M.
name: Lubsandorzhiev, B. K.
name: Lucht, S.
name: Maeda, J.
name: Mariani, C.
name: Maricic, J.
name: Martino, J.
name: Matsubara, T.
name: Mention, G.
name: Meregaglia, A.
name: Miletic, T.
name: Milincic, R.
name: Minotti, A.
name: Nagasaka, Y.
name: Nakajima, K.
name: Nikitenko, Y.
name: Novella, P.
name: Obolensky, M.
name: Oberauer, L.
name: Onillon, A.
name: Osborn, A.
name: Palomares, C.
name: Pepe, I. M.
name: Perasso, S.
name: Pfahler, P.
name: Porta, A.
name: Pronost, G.
name: Reichenbacher, J.
name: Reinhold, B.
name: Röhling, M.
name: Roncin, R.
name: Roth, S.
name: Rybolt, B.
name: Sakamoto, Y.
name: Santorelli, R.
name: Sato, F.
name: Schilithz, A. C.
name: Schönert, S.
name: Schoppmann, S.
name: Shaevitz, M. H.
name: Sharankova, R.
name: Shimojima, S.
name: Sibille, V.
name: Sinev, V.
name: Skorokhvatov, M.
name: Smith, E.
name: Spitz, J.
name: Stahl, A.
name: Stancu, I.
name: Stokes, L. F. F.
name: Strait, M.
name: Stüken, A.
name: Suekane, F.
name: Sukhotin, S.
name: Sumiyoshi, T.
name: Sun, Y.
name: Svoboda, R.
name: Terao, K.
name: Tonazzo, A.
name: Thi, H. H. Trinh
name: Valdiviesso, G.
name: Vassilopoulos, N.
name: Veyssiere, C.
name: Vivier, M.
name: Wagner, S.
name: Watanabe, H.
name: Wiebusch, C.
name: Winslow, L.
name: Wurm, M.
name: Yang, G.
name: Yermia, F.
name: Zimmer, V.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences
subject: FOS: Physical sciences

description: The oscillation results published by the Double Chooz collaboration in 2011 and 2012 rely on background models substantiated by reactor-on data. In this analysis, we present a background-model-independent measurement of the mixing angle $θ_{13}$ by including 7.53 days of reactor-off data. A global fit of the observed neutrino rates for different reactor power conditions is performed, yielding a measurement of both $θ_{13}$ and the total background rate. The results on the mixing angle are improved significantly by including the reactor-off data in the fit, as it provides a direct measurement of the total background rate. This reactor rate modulation analysis considers antineutrino candidates with neutron captures on both Gd and H, whose combination yields $\sin^2(2θ_{13})=$ 0.102 $\pm$ 0.028(stat.) $\pm$ 0.033(syst.). The results presented in this study are fully consistent with the ones already published by Double Chooz, achieving a competitive precision. They provide, for the first time, a determination of $θ_{13}$ that does not depend on a background model.