Ortho-positronium observation in the Double Chooz experiment

Y. Abe; J. C. dos Anjos; J. C. Barriere; E. Baussan; I. Bekman; M. Bergevin; T. J. C. Bezerra; L. Bezrukov; E. Blucher; C. Buck; J. Busenitz; A. Cabrera; E. Caden; L. Camilleri; R. Carr; M. Cerrada; P. -J. Chang; E. Chauveau; P. Chimenti; A. P. Collin; E. Conover; J. M. Conrad; J. I. Crespo-Anadon; K. Crum; A. S. Cucoanes; E. Damon; J. V. Dawson; J. Dhooghe; D. Dietrich; Z. Djurcic; M. Dracos; M. Elnimr; A. Etenko; M. Fallot; F. von Feilitzsch; J. Felde; S. M. Fernandes; V. Fischer; D. Franco; M. Franke; H. Furuta; I. Gil-Botella; L. Giot; M. Goger-Neff; L. F. G. Gonzalez; L. Goodenough; M. C. Goodman; C. Grant; N. Haag; T. Hara; J. Haser; M. Hofmann; G. A. Horton-Smith; A. Hourlier; M. Ishitsuka; J. Jochum; C. Joliet; F. Kaether; L. N. Kalousis; Y. Kamyshkov; D. M. Kaplan; T. Kawasaki; E. Kemp; H. de Kerret; D. Kryn; M. Kuze; T. Lachenmaier; C. E. Lane; T. Lasserre; A. Letourneau; D. Lhuillier; H. P. Lima; M. Lindner; J. M. Lopez-Castano; J. M. LoSecco; B. Lubsandorzhiev; S. Lucht; J. Maeda; C. Mariani; J. Maricic; J. Martino; T. Matsubara; G. Mention; A. Meregaglia; T. Miletic; R. Milincic; A. Minotti; Y. Nagasaka; Y. Nikitenko; P. Novella; L. Oberauer; M. Obolensky; A. Onillon; A. Osborn; C. Palomares; I. M. Pepe; S. Perasso; P. Pfahler; A. Porta; G. Pronost; J. Reichenbacher; B. Reinhold; M. Roehling; R. Roncin; S. Roth; B. Rybolt; Y. Sakamoto; R. Santorelli; A. C. Schilithz; S. Schoenert; S. Schoppmann; M. H. Shaevitz; R. Sharankova; S. Shimojima; D. Shrestha; V. Sibille; V. Sinev; M. Skorokhvatov; E. Smith; J. Spitz; A. Stahl; I. Stancu; L. F. F. Stokes; M. Strait; A. Stueken; F. Suekane; S. Sukhotin; T. Sumiyoshi; Y. Sun; R. Svoboda; K. Terao; A. Tonazzo; H. H. Trinh Thi; G. Valdiviesso; N. Vassilopoulos; C. Veyssiere; M. Vivier; S. Wagner; N. Walsh; H. Watanabe; C. Wiebusch; L. Winslow; M. Wurm; G. Yang; F. Yermia; V. Zimmer; Double Chooz Collaboration

doi:10.1007/JHEP10(2014)032

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Ortho-positronium observation in the Double Chooz experiment

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Ortho-positronium observation in the Double Chooz experiment

Y. Abe, J. C. dos Anjos, J. C. Barriere, E. Baussan, I. Bekman, M. Bergevin, T. J. C. Bezerra, L. Bezrukov, E. Blucher, C. Buck, …

The journal of high energy physics, v 2014(10)

06 Oct 2014

DOI: https://doi.org/10.1007/JHEP10(2014)032

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Abstract

Physical Sciences

Physics

Physics, Particles & Fields

Science & Technology

The 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.

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Title: Ortho-positronium observation in the Double Chooz experiment
Creators: Y. Abe - Tokyo Institute of Technology
J. C. dos Anjos - Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
J. C. Barriere - Atomic Energy and Alternative Energies Commission
E. Baussan - University of Strasbourg
I. Bekman - RWTH Aachen University
M. Bergevin - University of California, Davis
T. J. C. Bezerra - Tohoku University
L. Bezrukov - Russian Academy of Sciences
E. Blucher - University of Chicago
C. Buck - Max Planck Society
J. Busenitz - University of Alabama
A. Cabrera - Délégation Paris 7
E. Caden - Drexel University
L. Camilleri - Columbia University
R. Carr - Columbia University
M. Cerrada - CIEMAT, E-28040 Madrid, Spain
P. -J. Chang - Kansas State University
E. Chauveau - Tohoku University
P. Chimenti - Universidade Federal do ABC
A. P. Collin - Max Planck Society
E. Conover - University of Chicago
J. M. Conrad - Massachusetts Institute of Technology
J. I. Crespo-Anadon - CIEMAT, E-28040 Madrid, Spain
K. Crum - University of Chicago
A. S. Cucoanes - École des mines de Nantes
E. Damon - Drexel University
J. V. Dawson - Délégation Paris 7
J. Dhooghe - University of California, Davis
D. Dietrich - University of Tübingen
Z. Djurcic - Argonne National Laboratory
M. Dracos - University of Strasbourg
M. Elnimr - University of Alabama
A. Etenko - Kurchatov Institute
M. Fallot - École des mines de Nantes
F. von Feilitzsch - Technical University of Munich
J. Felde - University of California, Davis
S. M. Fernandes - University of Alabama
V. Fischer - Atomic Energy and Alternative Energies Commission
D. Franco - Délégation Paris 7
M. Franke - Technical University of Munich
H. Furuta - Tohoku University
I. Gil-Botella - CIEMAT, E-28040 Madrid, Spain
L. Giot - École des mines de Nantes
M. Goger-Neff - Technical University of Munich
L. F. G. Gonzalez - Univ Estadual Campinas, UNICAMP, BR-13083970 Campinas, SP, Brazil
L. Goodenough - Argonne National Laboratory
M. C. Goodman - Argonne National Laboratory
C. Grant - University of California, Davis
N. Haag - Technical University of Munich
T. Hara - Kobe University
J. Haser - Max Planck Society
M. Hofmann - Technical University of Munich
G. A. Horton-Smith - Kansas State University
A. Hourlier - Délégation Paris 7
M. Ishitsuka - Tokyo Institute of Technology
J. Jochum - University of Tübingen
C. Joliet - Univ Strasbourg, IPHC, CNRS, IN2P3, F-67037 Strasbourg, France
F. Kaether - Max Planck Society
L. N. Kalousis - Virginia Tech
Y. Kamyshkov - University of Tennessee at Knoxville
D. M. Kaplan - Illinois Institute of Technology
T. Kawasaki - Niigata University
E. Kemp - State University of Campinas
H. de Kerret - Délégation Paris 7
D. Kryn - Délégation Paris 7
M. Kuze - Tokyo Institute of Technology
T. Lachenmaier - University of Tübingen
C. E. Lane - Drexel University
T. Lasserre - Délégation Paris 7
A. Letourneau - Atomic Energy and Alternative Energies Commission
D. Lhuillier - Atomic Energy and Alternative Energies Commission
H. P. Lima - Argonne Natl Lab, Argonne, IL 60439 USA
M. Lindner - Max Planck Society
J. M. Lopez-Castano - CIEMAT, E-28040 Madrid, Spain
J. M. LoSecco - University of Notre Dame
B. Lubsandorzhiev - Russian Academy of Sciences
S. Lucht - RWTH Aachen University
J. Maeda - Kobe University
C. Mariani - Virginia Tech
J. Maricic - Drexel University
J. Martino - École des mines de Nantes
T. Matsubara - Tokyo Metropolitan University
G. Mention - Atomic Energy and Alternative Energies Commission
A. Meregaglia - University of Strasbourg
T. Miletic - Drexel University
R. Milincic - Drexel University
A. Minotti - University of Strasbourg
Y. Nagasaka - Hiroshima Institute of Technology
Y. Nikitenko - Russian Academy of Sciences
P. Novella - Délégation Paris 7
L. Oberauer - Technical University of Munich
M. Obolensky - Délégation Paris 7
A. Onillon - École des mines de Nantes
A. Osborn - University of Tennessee at Knoxville
C. Palomares - CIEMAT, E-28040 Madrid, Spain
I. M. Pepe - Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
S. Perasso - Délégation Paris 7
P. Pfahler - Technical University of Munich
A. Porta - École des mines de Nantes
G. Pronost - École des mines de Nantes
J. Reichenbacher - University of Alabama
B. Reinhold - University of Hawaii at Manoa
M. Roehling - Univ Tubingen, Kepler Ctr AStro & Particle Phys, D-72076 Tubingen, Germany
R. Roncin - Délégation Paris 7
S. Roth - RWTH Aachen University
B. Rybolt - University of Tennessee at Knoxville
Y. Sakamoto - Tohoku Gakuin University
R. Santorelli - CIEMAT, E-28040 Madrid, Spain
A. C. Schilithz - Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
S. Schoenert - Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
S. Schoppmann - RWTH Aachen University
M. H. Shaevitz - Columbia University
R. Sharankova - Tokyo Institute of Technology
S. Shimojima - Tokyo Metropolitan University
D. Shrestha - Kansas State University
V. Sibille - Atomic Energy and Alternative Energies Commission
V. Sinev - Russian Academy of Sciences
M. Skorokhvatov - Kurchatov Institute
E. Smith - Drexel University
J. Spitz - Massachusetts Institute of Technology
A. Stahl - RWTH Aachen University
I. Stancu - University of Alabama
L. F. F. Stokes - University of Tübingen
M. Strait - University of Chicago
A. Stueken - Rhein Westfal TH Aachen, Inst Phys 3, D-52056 Aachen, Germany
F. Suekane - Tohoku University
S. Sukhotin - Kurchatov Institute
T. Sumiyoshi - Tokyo Metropolitan University
Y. Sun - University of Alabama
R. Svoboda - University of California, Davis
K. Terao - Massachusetts Institute of Technology
A. Tonazzo - Délégation Paris 7
H. H. Trinh Thi - Technical University of Munich
G. Valdiviesso - Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil
N. Vassilopoulos - University of Strasbourg
C. Veyssiere - Atomic Energy and Alternative Energies Commission
M. Vivier - Atomic Energy and Alternative Energies Commission
S. Wagner - Max Planck Society
N. Walsh - University of California, Davis
H. Watanabe - Max Planck Society
C. Wiebusch - RWTH Aachen University
L. Winslow - Massachusetts Institute of Technology
M. Wurm - University of Tübingen
G. Yang - Illinois Institute of Technology
F. Yermia - École des mines de Nantes
V. Zimmer - Technical University of Munich
Double Chooz Collaboration
Publication Details: The journal of high energy physics, v 2014(10)
Publisher: Springer Nature
Number of pages: 17
Grant note: excellence cluster "Origin and Structure of the Universe" RFBR (the Russian Foundation for Basic Research); Russian Foundation for Basic Research (RFBR) CEA; French Atomic Energy Commission Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq); Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPQ) Max Planck Gesellschaft; Max Planck Society Financiadora de Estudos e Projetos (FINEP); Financiadora de Inovacao e Pesquisa (Finep) Ministry of Education, Culture, Sports. Science and Technology of Japan (MEXT); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT) Russian Academy of Science; Russian Academy of Sciences Kurchatov Institute Sao Paulo Research Foundation (FAPESP); Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) 2011-JS04-009-01 / ANR NuToPs project; French National Research Agency (ANR) National Science Foundation of the United States; National Science Foundation (NSF) Department of Energy; United States Department of Energy (DOE) CNRS/IN2P3; Centre National de la Recherche Scientifique (CNRS) ANR-10-LABX-0023; ANR-11-IDEX-0005-02 / UnivEarthS LabEx program of Sorbonne Paris Cite in France Brazilian Network for High Energy Physics (RENAFAE) in Brazil Maier-Leibnitz-Laboratorium Garching in Germany Brazilian Ministry of Science, Technology and Innovation (MCTI) Ministerio de Ciencia e Innovacion (MICINN) of Spain; Spanish Government TR27 / Transregional Collaborative Research Center computer center CCIN2P3 SBH WI 2152 / Deutsche Forschungsgemeinschaft DFG; German Research Foundation (DFG) Japan Society for the Promotion of Science (JSPS); Ministry of Education, Culture, Sports, Science and Technology, Japan (MEXT); Japan Society for the Promotion of Science
Resource Type: Journal article
Language: English
Academic Unit: Electrical and Computer Engineering; Physics
Web of Science ID: WOS:000343056400007
Scopus ID: 2-s2.0-84924364524
Other Identifier: 991019167729704721

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Collaboration types: Domestic collaboration; International collaboration
Web of Science research areas: Physics, Particles & Fields

Ortho-positronium observation in the Double Chooz experiment

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