For authors
Submission status

Archive (English)
   Volumes 81-92
   Volumes 41-60
   Volumes 21-40
   Volumes 1-20
   Volumes 61-80
      Volume 80
      Volume 79
      Volume 78
      Volume 77
      Volume 76
      Volume 75
      Volume 74
      Volume 73
      Volume 72
      Volume 71
      Volume 70
      Volume 69
      Volume 68
      Volume 67
      Volume 66
      Volume 65
      Volume 64
      Volume 63
      Volume 62
      Volume 61
VOLUME 80 | ISSUE 6 | PAGE 429
Study of 2β-decay of 100Mo and 82Se using the NEMO3 detector
R. Arnold^\blacktriangledown, C. Augier^\bullet, J. Baker^\triangledown, A. Barabash+, V. Brudanin^\triangle, A. J. Caffrey^\triangledown, V. Egorov^\triangle, J. L. Guyonnet^\blacktriangledown, F. Hubert+, Ph. Hubert+, L. Jenner^\blacklozenge, C. Jollet^\blacktriangledown, S. Jullian^\bullet, A. Klimenko^\triangle, O. Kochetov^\triangle, S. Konovalov+, V. Kovalenko^\triangle, D. Lalanne^\bullet, F. Leccia+, I. Linck^\blacktriangledown, C. Longuemare*, G. Lutter+, Ch. Marquet+, F. Mauger*, H. W. Nicholson^\blacktriangle, H. Ohsumi^\lozenge, F. Piquemal+, J-L. Reyss^\square, R. Saakyan^\blacklozenge, X. Sarazin^\bullet, F. Scheibling^\blacktriangledown, Yu. Shitov^\triangle, L. Simard^\bullet, A. Smolnikov^\triangle, I. Stekl^\blacksquare, J. Suhonen°, C. S. Sutton^\blacktriangle, G. Szklarz^\bullet, V. Timkin^\triangle, J. Thomas^\blacklozenge, V. Tretyak^\triangle, V. Umatov+, L. Vála^\blacksquare, I. Vanyushin+, S. Vasiliev^\triangle, V. Vasilyev+, V. Vorobel^\bigstar, Ts. Vylov^\triangle
+CENBG, IN2P3-CNRS et Université de Bordeaux, 33170 Gradignan, France
*LPC, IN2P3-CNRS et Université de Caen, 14032 Caen, France
^\triangleJoint Institute for Nuclear Research, 141980 Dubna, Russia
^\squareCFR, CNRS, 91190 Gif sur Yvette, France
^\triangledownINEEL, Idaho Falls, ID 83415, USA
°JYVÄSKYLÄ University, 40351 Jyväskylä, Finland
+Institute of Theoretical and Experimental Physics, 117218 Moscow, Russia
^\bulletLAL, IN2P3-CNRS et Université Paris-Sud, 91405 Orsay, France
^\blacktriangleMHC, South Hadley, Massachusetts 01075, USA
^\blacktriangledownIReS, IN2P3-CNRS et Université Louis Pasteur, 67037 Strasbourg, France
^\blacksquareIEAP CTU, Prague, Czech Republic
^\bigstarCharles University, Prague, Czech Republic
^\lozengeSAGA University, Saga, Saga 840-8502, Japan
^\blacklozengeUniversity College London, London, UK

PACS: 14.80.Mz, 23.40.-s
After analysis of 5797 h of data from the detector NEMO3, new limits on neutrinoless double beta decay of 100Mo (T1/2 > 3.1• 1023 y , 90% CL) and 82Se (T1/2 > 1.4• 1023 y , 90% CL) have been obtained. The corresponding limits on the effective majorana neutrino mass are: \langle m_{\nu}\rangle<
(0.8-1.2) eV and \langle m_{\nu}\rangle< (1.5-3.1) eV, respectively. Also the limits on double-beta decay with Majoron emission are: T1/2 > 1.4• 1022 y (90%CL) for 100Mo and T1/2> 1.2• 1022 y (90% CL) for 82Se. Corresponding bounds on the Majoron-neutrino coupling constant are \langle g_{ee}\rangle < (0.5-0.9) \cdot 10^{-4} and < (0.7-1.6) • 10-4 . Two-neutrino -decay half-lives have been measured with a high accuracy, T_{1/2}^{^{100}{\rm Mo}} = [7.68
\pm 0.02({\rm stat}) \pm 0.54({\rm syst}) ] \cdot 10^{18} y and T_{1/2}^{^{82}{\rm Se}} = [10.3 \pm 0.3({\rm stat}) \pm 0.7({\rm syst})
]\cdot 10^{19} y.

Download PS file (GZipped, 477.4K)  |  Download PDF file (589.5K)