Background-independent measurement of theta(13) in Double Chooz

dc.contributor.authorDouble Chooz Collaboration
dc.contributor.authorBusenitz, J.
dc.contributor.authorElnimr, M.
dc.contributor.authorFernandes, S.M.
dc.contributor.authorKonno, T.
dc.contributor.authorKuze, M.
dc.contributor.authorSharankova, R.
dc.contributor.authorStancu, I.
dc.contributor.otherRWTH Aachen University
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.contributor.otherUnited States Department of Energy (DOE)
dc.contributor.otherArgonne National Laboratory
dc.contributor.otherCentre National de la Recherche Scientifique (CNRS)
dc.contributor.otherCNRS - National Institute of Nuclear and Particle Physics (IN2P3)
dc.contributor.otherUDICE-French Research Universities
dc.contributor.otherUniversite PSL
dc.contributor.otherUniversite Paris Cite
dc.contributor.otherObservatoire de Paris
dc.contributor.otherCentro Brasileiro de Pesquisas Fisicas
dc.contributor.otherUniversity of Chicago
dc.contributor.otherCentro de Investigaciones Energeticas, Medioambientales Tecnologicas
dc.contributor.otherColumbia University
dc.contributor.otherUniversity of California System
dc.contributor.otherUniversity of California Davis
dc.contributor.otherDrexel University
dc.contributor.otherHiroshima Institute of Technology
dc.contributor.otherIllinois Institute of Technology
dc.contributor.otherRussian Academy of Sciences
dc.contributor.otherInstitute for Nuclear Research of the Russian Academy of Sciences
dc.contributor.otherKansas State University
dc.contributor.otherKobe University
dc.contributor.otherNational Research Centre - Kurchatov Institute
dc.contributor.otherMassachusetts Institute of Technology (MIT)
dc.contributor.otherMax Planck Society
dc.contributor.otherNiigata University
dc.contributor.otherUniversity of Notre Dame
dc.contributor.otherUniversites de Strasbourg Etablissements Associes
dc.contributor.otherUniversite de Strasbourg
dc.contributor.otherIMT - Institut Mines-Telecom
dc.contributor.otherIMT Atlantique
dc.contributor.otherNantes Universite
dc.contributor.otherTechnical University of Munich
dc.contributor.otherUniversity of Tennessee System
dc.contributor.otherUniversity of Tennessee Knoxville
dc.contributor.otherTohoku University
dc.contributor.otherTohoku Gakuin University
dc.contributor.otherTokyo Institute of Technology
dc.contributor.otherTokyo Metropolitan University
dc.contributor.otherEberhard Karls University of Tubingen
dc.contributor.otherUniversidade Federal do ABC (UFABC)
dc.contributor.otherUniversidade Estadual de Campinas
dc.contributor.otherVirginia Polytechnic Institute & State University
dc.description.abstractThe 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 \(\theta_{13}\) by including 7.53 days of reactor-off data. A global fit of the observed antineutrino rates for different reactor power conditions is performed, yielding a measurement of both \(\theta_{13}\) 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 sin² (2\(\theta_{13}\))=0.102±0.028(stat.)±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 \(\theta_{13}\) that does not depend on a background model.en_US
dc.identifier.citationAbe, Y., dos Anjos, J. C., Barriere, J. C., Baussan, E., Bekman, I., Bergevin, M., Bezerra, T. J. C., Bezrukov, L., Blucher, E., Buck, C., Busenitz, J., Cabrera, A., Caden, E., Camilleri, L., Carr, R., Cerrada, M., Chang, P.-J., Chauveau, E., Chimenti, P., … Zimmer, V. (2014). Background-independent measurement of <mml:math altimg="si1.gif" overflow="scroll" xmlns:xocs="" xmlns:xs="" xmlns:xsi="" xmlns="" xmlns:ja="" xmlns:mml="" xmlns:tb="" xmlns:sb="" xmlns:ce="" xmlns:xlink="" xmlns:cals="" xmlns:sa=""><mml:msub><mml:mrow><mml:mi>θ</mml:mi></mml:mrow><mml:mrow><mml:mn>13</mml:mn></mml:mrow></mml:msub></mml:math> in Double Chooz. In Physics Letters B (Vol. 735, pp. 51–56). Elsevier BV.
dc.subjectAstronomy & Astrophysics
dc.subjectPhysics, Nuclear
dc.subjectPhysics, Particles & Fields
dc.titleBackground-independent measurement of theta(13) in Double Choozen_US
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