Measurement of theta(13) in Double Chooz using neutron captures on hydrogen with novel background rejection techniques

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dc.contributor.author Abe, Y.
dc.contributor.author Appel, S.
dc.contributor.author Abrahao, T.
dc.contributor.author Almazan, H.
dc.contributor.author Alt, C.
dc.contributor.author dos Anjos, J. C.
dc.contributor.author Barriere, J. C.
dc.contributor.author Baussan, E.
dc.contributor.author Bekman, I.
dc.contributor.author Bergevin, M.
dc.contributor.author Horton-Smith, Glenn
dc.date.accessioned 2016-09-20T17:31:04Z
dc.date.available 2016-09-20T17:31:04Z
dc.identifier.uri http://hdl.handle.net/2097/33995
dc.description Citation: Abe, Y., Appel, S., Abrahao, T., Almazan, H., Alt, C., dos Anjos, J. C., . . . Double Chooz, C. (2016). Measurement of theta(13) in Double Chooz using neutron captures on hydrogen with novel background rejection techniques. Journal of High Energy Physics(1), 29. doi:10.1007/jhep01(2016)163
dc.description Additional Authors: Buck, C.;Busenitz, J.;Cabrera, A.;Camilleri, L.;Carr, R.;Cerrada, M.;Chauveau, E.;Chimenti, P.;Collin, A. P.;Conrad, J. M.;Crespo-Anadon, J. I.;Crum, K.;Cucoanes, A. S.;Damon, E.;Dawson, J. V.;Dhooghe, J.;Dietrich, D.;Djurcic, Z.;Dracos, M.;Etenko, A.;Fallot, M.;von Feilitzsch, F.;Felde, J.;Fernandes, S. M.;Fischer, V.;Franco, D.;Franke, M.;Furuta, H.;Gil-Botella, I.;Giot, L.;Goger-Neff, M.;Gomez, H.;Gonzalez, L. F. G.;Goodenough, L.;Goodman, M. C.;Haag, N.;Hara, T.;Haser, J.;Hellwig, D.;Hofmann, M.;Horton-Smith, G. A.;Hourlier, A.;Ishitsuka, M.;Jochum, J.;Jollet, C.;Kaether, F.;Kalousis, L. N.;Kamyshkov, Y.;Kaneda, M.;Kaplan, D. M.;Kawasaki, T.;Kemp, E.;de Kerret, H.;Kryn, D.;Kuze, M.;Lachenmaier, T.;Lane, C. E.;Lasserre, T.;Letourneau, A.;Lhuillier, D.;Lima, H. P.;Lindner, M.;Lopez-Castano, J. M.;LoSecco, J. M.;Lubsandorzhiev, B.;Lucht, S.;Maeda, J.;Mariani, C.;Maricic, J.;Martino, J.;Matsubara, T.;Mention, G.;Meregaglia, A.;Miletic, T.;Milincic, R.;Minotti, A.;Nagasaka, Y.;Navas-Nicolas, D.;Novella, P.;Oberauer, L.;Obolensky, M.;Onillon, A.;Osborn, A.;Palomares, C.;Pepe, I. M.;Perasso, S.;Porta, A.;Pronost, G.;Reichenbacher, J.;Reinhold, B.;Rohling, M.;Roncin, R.;Rybolt, B.;Sakamoto, Y.;Santorelli, R.;Schilithz, A. C.;Schonert, S.;Schoppmann, S.;Shaevitz, M. H.;Sharankova, R.;Shrestha, D.;Sibille, V.;Sinev, V.;Skorokhvatov, M.;Smith, E.;Soiron, M.;Spitz, J.;Stahl, A.;Stancu, I.;Stokes, L. F. F.;Strait, M.;Suekane, F.;Sukhotin, S.;Sumiyoshi, T.;Sun, Y.;Svoboda, R.;Terao, K.;Tonazzo, A.;Thi, H. H. T.;Valdiviesso, G.;Vassilopoulos, N.;Veyssiere, C.;Vivier, M.;Wagner, S.;Walsh, N.;Watanabe, H.;Wiebusch, C.;Wurm, M.;Yang, G.;Yermia, F.;Zimmer, V.;Double Chooz, Collaboration
dc.description.abstract The Double Chooz collaboration presents a measurement of the neutrino mixing angle theta(13) using reactor (nu) over bar (e) observed via the inverse beta decay reaction in which the neutron is captured on hydrogen. This measurement is based on 462.72 live days data, approximately twice as much data as in the previous such analysis, collected with a detector positioned at an average distance of 1050m from two reactor cores. Several novel techniques have been developed to achieve significant reductions of the backgrounds and systematic uncertainties. Accidental coincidences, the dominant background in this analysis, are suppressed by more than an order of magnitude with respect to our previous publication by a multi-variate analysis. These improvements demonstrate the capability of precise measurement of reactor (nu) over bar (e) without gadolinium loading. Spectral distortions from the (nu) over bar (e) reactor flux predictions previously reported with the neutron capture on gadolinium events are confirmed in the independent data sample presented here. A value of sin(2) 2 theta(13) = 0.095(0.039)(+0.039)(stat+syst) is obtained from a fit to the observed event rate as a function of the reactor power, a method insensitive to the energy spectrum shape. A simultaneous fit of the hydrogen capture events and of the gadolinium capture events yields a measurement of sin(2) 2 theta(13) = 0.088 +/- 0.033(stat+syst).
dc.relation.uri https://doi.org/10.1007/jhep01(2016)163
dc.rights Attribution 4.0 International (CC BY 4.0)
dc.rights.uri https://creativecommons.org/licenses/by/4.0/
dc.subject Oscillation
dc.subject Electroweak Interaction
dc.subject Neutrino Detectors And Telescopes
dc.subject Flavor Physics
dc.subject Fission-Products
dc.subject Spectra
dc.title Measurement of theta(13) in Double Chooz using neutron captures on hydrogen with novel background rejection techniques
dc.type Article
dc.date.published 2016
dc.citation.doi 10.1007/jhep01(2016)163
dc.citation.issn 1029-8479
dc.citation.issue 1
dc.citation.jtitle Journal of High Energy Physics
dc.citation.spage 29
dc.contributor.authoreid gahs


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