Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector

(10) The University of Manchester; (11) USMBA; (12) University of Texas at Austin (13) IEAP; (14) IFIC; 15); (15) Hanoi University of Science; (16) Saga University; (17) LSCE; 18); (18) Imperial College London

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Measurement of the Double Beta Decay Half-life of 130Te with the NEMO-3 Detector

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arxiv 1104.3716 v3 pith:FMGRCD54 submitted 2011-04-19 nucl-ex hep-ex

R. Arnold (1) , C. Augier (2) , J. Baker (3 , 23) , A.S. Barabash (4) , A. Basharina-Freshville (5) , S. Blondel (2) , M. Bongrand (2)

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G. Broudin-Bay (6 7) V. Brudanin (8) A.J. Caffrey (3) A. Chapon (9) E. Chauveau (10) D. Durand (9) V. Egorov (8) R. Flack (5) X. Garrido (2) J. Grozier (5) B. Guillon (9) Ph. Hubert (6 C.M. Jackson (10) S. Jullian (2) M. Kauer (5) A. Klimenko (8) O. Kochetov (8) S.I. Konovalov (4) V. Kovalenko (6 7 8) D. Lalanne (2) T. Lamhamdi (11) K. Lang (12) Z. Liptak (12) G. Lutter (6 F. Mamedov (13) Ch. Marquet (6 J. Martin-Albo (14) F. Mauger (9) J. Mott (5) A. Nachab (6 I. Nemchenok (8) C.H. Nguyen (6 15) F. Nova (12) P. Novella (14) H. Ohsumi (16) R.B. Pahlka (12) F. Perrot (6 F. Piquemal (6 J.L. Reyss (17) B. Richards (5) J.S. Ricol (6 R. Saakyan (5) X. Sarazin (2) Yu. Shitov (8 18) L. Simard (2) F. Šimkovic (19) A. Smolnikov (8) S. Söldner-Rembold (10) I. Štekl (13) J. Suhonen (20) C.S. Sutton (21) G. Szklarz (2) J. Thomas (5) V. Timkin (8) S. Torre (5) V.I. Tretyak (1 V. Umatov (4) L. Vála (13) I. Vanyushin (4) V. Vasiliev (5) V. Vorobel (22) T. Vylov (8 A. Zukauskas (22) ((1) IPHC-DRS Université de Strasbourg CNRS/IN2P3 France (2) LAL Université Paris-Sud 11 (3) INL Idaho National Laboratory Idaho Falls (4) ITEP Institute of Theoretical Experimental Physics Moscow Russia (5) University College London London UK (6) Université Bordeaux CENBG Gradignan (7) CNRS/IN2P3 Centre d\' Etudes Nucléaires de Bordeaux Gradignan (8) JINR Joint Institute for Nuclear Research Dubna (9) LPC ENSICAEN Université de Caen (10) The University of Manchester Manchester UK (11) USMBA Université Sidi Mohamed Ben Abdellah Fes Morocco (12) University of Texas at Austin (13) IEAP Czech Technical University in Prague Czech Republic (14) IFIC CSIC - Universitat de Valencia Valencia Spain (15) Hanoi University of Science Hanoi Vietnam (16) Saga University Japan (17) LSCE CNRS Gif-sur-Yvette (18) Imperial College London (19) FMFI Commenius University Bratislava Slovakia (20) Jyväskylä University Finland (21) MHC Mount Holyoke College South Hadley MA (22) Charles University in Prague Faculty of Mathematics Physics Prague (23) Deceased) (The NEMO-3 Collaboration)

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classification nucl-exhep-ex

keywords decayhalf-lifebetadoublemeasurementnemo-3daysdetector

verification ladder T0 review T1 audit T2 compute T3 formal

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This Letter reports results from the NEMO-3 experiment based on an exposure of 1275 days with 661g of 130Te in the form of enriched and natural tellurium foils. The double beta decay rate of 130Te is found to be greater than zero with a significance of 7.7 standard deviations and the half-life is measured to be T1/2 = (7.0 +/- 0.9(stat) +/- 1.1(syst)) x 10^{20} yr. This represents the most precise measurement of this half-life yet published and the first real-time observation of this decay.

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