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Ortho-positronium observation in the Double Chooz experiment

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dc.contributor.authorAbe, Y.en
dc.contributor.authordos Anjos, J. C.en
dc.contributor.authorBarriere, J. C.en
dc.contributor.authorBaussan, E.en
dc.contributor.authorBekman, I.en
dc.contributor.authorBergevin, M.en
dc.contributor.authorBezerra, T. J. C.en
dc.contributor.authorBezrukhov, Leonid B.en
dc.contributor.authorBlucher, E.en
dc.contributor.authorBuck, C.en
dc.contributor.authorBusenitz, J.en
dc.contributor.authorCabrera, A.en
dc.contributor.authorCaden, E.en
dc.contributor.authorCamilleri, Leslieen
dc.contributor.authorCarr, Rachel E.en
dc.contributor.authorCerrada, M.en
dc.contributor.authorChang, P. J.en
dc.contributor.authorChauveau, E.en
dc.contributor.authorChimenti, P.en
dc.contributor.authorCollin, A. P.en
dc.contributor.authorConover, E.en
dc.contributor.authorConrad, Janet M.en
dc.contributor.authorCrespo-Anadon, J. I.en
dc.contributor.authorCrum, K.en
dc.contributor.authorCucoanes, A. S.en
dc.contributor.authorDamon, E.en
dc.contributor.authorDawson, J. V.en
dc.contributor.authorDhooghe, J.en
dc.contributor.authorDietrich, D.en
dc.contributor.authorDjurcic, Zelimiren
dc.contributor.authorDracos, M.en
dc.contributor.authorElnimr, M.en
dc.contributor.authorEtenko, A.en
dc.contributor.authorFallot, M.en
dc.contributor.authorvon Feilitzsch, F.en
dc.contributor.authorFelde, J.en
dc.contributor.authorFernandes, S. M.en
dc.contributor.authorFischer, V.en
dc.contributor.authorFranco, D.en
dc.contributor.authorFranke, M.en
dc.contributor.authorFuruta, H.en
dc.contributor.authorGil-Botella, I.en
dc.contributor.authorGiot, L.en
dc.contributor.authorGoger-Neff, M.en
dc.contributor.authorGonzalez, L. F. G.en
dc.contributor.authorGoodenough, L.en
dc.contributor.authorGoodman, M. C.en
dc.contributor.authorGrant, C.en
dc.contributor.authorHaag, N.en
dc.contributor.authorHara, T.en
dc.contributor.authorHaser, J.en
dc.contributor.authorHofmann, M.en
dc.contributor.authorHorton-Smith, Glenn A.en
dc.contributor.authorHourlier, A.en
dc.contributor.authorIshitsuka, M.en
dc.contributor.authorJochum, J.en
dc.contributor.authorJollet, C.en
dc.contributor.authorKaether, F.en
dc.contributor.authorKalousis, L. N.en
dc.contributor.authorKamyshkov, Y.en
dc.contributor.authorKaplan, D. M.en
dc.contributor.authorKawasaki, T.en
dc.contributor.authorKemp, E.en
dc.contributor.authorde Kerret, H.en
dc.contributor.authorKryn, D.en
dc.contributor.authorKuze, M.en
dc.contributor.authorLachenmaier, Tobiasen
dc.contributor.authorLane, C. E.en
dc.contributor.authorLasserre, T.en
dc.contributor.authorLetourneau, A.en
dc.contributor.authorLhuillier, D.en
dc.contributor.authorLima, H. P., Jr.en
dc.contributor.authorLindner, M.en
dc.contributor.authorLopez-Castano, J. M.en
dc.contributor.authorLoSecco, J. M.en
dc.contributor.authorLubsandorzhiev, B. K.en
dc.contributor.authorLucht, S.en
dc.contributor.authorMaeda, J.en
dc.contributor.authorMariani, Camilloen
dc.contributor.authorMaricic, Jelenaen
dc.contributor.authorMartino, J.en
dc.contributor.authorMatsubara, T.en
dc.contributor.authorMention, G.en
dc.contributor.authorMeregaglia, A.en
dc.contributor.authorMiletic, T.en
dc.contributor.authorMilincic, R.en
dc.contributor.authorMinotti, A.en
dc.contributor.authorNagasaka, Y.en
dc.contributor.authorNikitenko, Y.en
dc.contributor.authorNovella, P.en
dc.contributor.authorOberauer, L.en
dc.contributor.authorObolensky, M.en
dc.contributor.authorOnillon, A.en
dc.contributor.authorOsborn, A.en
dc.contributor.authorPalomares, C.en
dc.contributor.authorPepe, I. M.en
dc.contributor.authorPerasso, S.en
dc.contributor.authorPfahler, P.en
dc.contributor.authorPorta, A.en
dc.contributor.authorPronost, G.en
dc.contributor.authorReichenbacher, J.en
dc.contributor.authorReinhold, B.en
dc.contributor.authorRoehling, M.en
dc.contributor.authorRoncin, R.en
dc.contributor.authorRoth, S.en
dc.contributor.authorRybolt, B.en
dc.contributor.authorSakamoto, Y.en
dc.contributor.authorSantorelli, R.en
dc.contributor.authorSchilithz, A. C.en
dc.contributor.authorSchoenert, S.en
dc.contributor.authorSchoppmann, S.en
dc.contributor.authorShaevitz, Marjorie Hansenen
dc.contributor.authorSharankova, R.en
dc.contributor.authorShimojima, S.en
dc.contributor.authorShrestha, D.en
dc.contributor.authorSibille, V.en
dc.contributor.authorSinev, V.en
dc.contributor.authorSkorokhvatov, Mikhail D.en
dc.contributor.authorSmith, E.en
dc.contributor.authorSpitz, Joshuaen
dc.contributor.authorStahl, A.en
dc.contributor.authorStancu, Ionen
dc.contributor.authorStokes, Lee F. F.en
dc.contributor.authorStrait, M.en
dc.contributor.authorStuken, A.en
dc.contributor.authorSuekane, F.en
dc.contributor.authorSukhotin, S.en
dc.contributor.authorSumiyoshi, T.en
dc.contributor.authorSun, Y.en
dc.contributor.authorSvoboda, R.en
dc.contributor.authorTerao, K.en
dc.contributor.authorTonazzo, A.en
dc.contributor.authorThi, H. H. Trinhen
dc.contributor.authorValdiviesso, G. A.en
dc.contributor.authorVassilopoulos, N.en
dc.contributor.authorVeyssiere, C.en
dc.contributor.authorVivier, M.en
dc.contributor.authorWagner, S.en
dc.contributor.authorWalsh, N.en
dc.contributor.authorWatanabe, H.en
dc.contributor.authorWiebusch, C.en
dc.contributor.authorWinslow, L.en
dc.contributor.authorWurm, M.en
dc.contributor.authorYang, G.en
dc.contributor.authorYermia, F.en
dc.contributor.authorZimmer, V.en
dc.contributor.departmentCenter for Neutrino Physicsen
dc.date.accessioned2019-03-13T12:51:48Zen
dc.date.available2019-03-13T12:51:48Zen
dc.date.issued2014-10-06en
dc.description.abstractThe Double Chooz experiment measures the neutrino mixing angle theta(13) by detecting reactor (nu) over bar (e) via inverse beta decay. The positron-neutron space and time coincidence allows for a sizable background rejection, nonetheless liquid scintillator detectors would profit from a positron/electron discrimination, if feasible in large detector, to suppress the remaining background. Standard particle identification, based on particle dependent time profile of photon emission in liquid scintillator, can not be used given the identical mass of the two particles. However, the positron annihilation is sometimes delayed by the orthopositronium (o-Ps) metastable state formation, which induces a pulse shape distortion that could be used for positron identification. In this paper we report on the first observation of positronium formation in a large liquid scintillator detector based on pulse shape analysis of single events. The o-Ps formation fraction and its lifetime were measured, finding the values of 44 +/- 12 % (sys.) +/- 5 % (stat.) and 3.68 ns +/- 0.17 ns (sys.) +/- 0.15 ns (stat.) respectively, in agreement with the results obtained with a dedicated positron annihilation lifetime spectroscopy setup.en
dc.description.notesWe thank the French electricity company EDF; the European fund FEDER; the Region de Champagne Ardenne; the Departement des Ardennes; and the Communaute des Communes Ardennes Rives de Meuse. We acknowledge the support of the ANR NuToPs project (grant 2011-JS04-009-01), the CEA, CNRS/IN2P3, the computer center CCIN2P3, and the UnivEarthS LabEx program of Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02) in France; the Ministry of Education, Culture, Sports. Science and Technology of Japan (MEXT) and the Japan Society for the Promotion of Science (JSPS); the Department of Energy and the National Science Foundation of the United States; the Ministerio de Ciencia e Innovacion (MICINN) of Spain; the Max Planck Gesellschaft, and the Deutsche Forschungsgemeinschaft DFG (SBH WI 2152), the Transregional Collaborative Research Center TR27, the excellence cluster "Origin and Structure of the Universe", and the Maier-Leibnitz-Laboratorium Garching in Germany; the Russian Academy of Science, the Kurchatov Institute and RFBR (the Russian Foundation for Basic Research); the Brazilian Ministry of Science, Technology and Innovation (MCTI), the Financiadora de Estudos e Projetos (FINEP), the Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), the Sao Paulo Research Foundation (FAPESP), and the Brazilian Network for High Energy Physics (RENAFAE) in Brazil.en
dc.description.sponsorshipANR NuToPs project [2011-JS04-009-01]en
dc.description.sponsorshipCEAen
dc.description.sponsorshipCNRS/IN2P3en
dc.description.sponsorshipcomputer center CCIN2P3en
dc.description.sponsorshipUnivEarthS LabEx program of Sorbonne Paris Cite in France [ANR-10-LABX-0023, ANR-11-IDEX-0005-02]en
dc.description.sponsorshipMinistry of Education, Culture, Sports. Science and Technology of Japan (MEXT)en
dc.description.sponsorshipJapan Society for the Promotion of Science (JSPS)en
dc.description.sponsorshipDepartment of Energyen
dc.description.sponsorshipNational Science Foundation of the United Statesen
dc.description.sponsorshipMinisterio de Ciencia e Innovacion (MICINN) of Spainen
dc.description.sponsorshipMax Planck Gesellschaften
dc.description.sponsorshipDeutsche Forschungsgemeinschaft DFG [SBH WI 2152]en
dc.description.sponsorshipTransregional Collaborative Research Center [TR27]en
dc.description.sponsorshipexcellence cluster "Origin and Structure of the Universe"en
dc.description.sponsorshipMaier-Leibnitz-Laboratorium Garching in Germanyen
dc.description.sponsorshipRussian Academy of Scienceen
dc.description.sponsorshipKurchatov Instituteen
dc.description.sponsorshipRFBR (the Russian Foundation for Basic Research)en
dc.description.sponsorshipBrazilian Ministry of Science, Technology and Innovation (MCTI)en
dc.description.sponsorshipFinanciadora de Estudos e Projetos (FINEP)en
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)en
dc.description.sponsorshipSao Paulo Research Foundation (FAPESP)en
dc.description.sponsorshipBrazilian Network for High Energy Physics (RENAFAE) in Brazilen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1007/JHEP10(2014)032en
dc.identifier.issn1029-8479en
dc.identifier.issue10en
dc.identifier.other32en
dc.identifier.urihttp://hdl.handle.net/10919/88423en
dc.language.isoen_USen
dc.publisherSpringeren
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectNeutrino Detectors and Telescopesen
dc.titleOrtho-positronium observation in the Double Chooz experimenten
dc.title.serialJournal of High Energy Physicsen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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