/ Experiment-HEP hep-ex/0601021


Limits on different Majoron decay modes of Mo-100 and Se-82 for neutrinoless double beta decays in the NEMO-3 experiment


Arnold, R. ; Augier, C. ; Baker, J. ; Barabash, A.S. ; Brudanin, V. ; Caffrey, A.J. ; Caurier, E. ; Egorov, V. ; Errahmane, K. ; Etienvre, A.I. ; Guyonnet, J.L. ; Hubert, F. ; Hubert, Ph. ; Jollet, C. ; Jullian, S. ; King, S. ; Kochetov, O. ; Konovalov, S. ; Kovalenko, V. ; Lalanne, D. ; Leccia, F. ; Longuemare, C. ; Lutter, G. ; Marquet, Ch. ; Mauger, F. ; Nowacki, F. ; Ohsumi, H. ; Piquemal, F. ; Reyss, J.-L. ; Saakyan, R. ; Sarazin, X. ; Shitov, Yu. ; Simard, L. ; Simkovic, F. ; Smolnikov, A. ; Stekl, I. ; Suhonen, J. ; Sutton, C.S. ; Szklarz, G. ; Timkin, V. ; Thomas, J. ; Tretyak, V. ; Umatov, V. ; Vala, L. ; Vanyushin, I. ; Vasilyev, V. ; Vorobel, V. ; Vylov, Ts.

Published in: Nucl.Phys.
Year: 2006
Vol.: A765
Page No: 483-494
Pages: 23

Abstract: The NEMO-3 tracking detector is located in the Fr\'ejus Underground Laboratory. It was designed to study double beta decay in a number of different isotopes. Presented here are the experimental half-life limits on the double beta decay process for the isotopes $^{100}$Mo and $^{82}$Se for different Majoron emission modes and limits on the effective neutrino-Majoron coupling constants. In particular, new limits on ordinary Majoron (spectral index 1) decay of $^{100}$Mo ($T_{1/2} > 2.7\cdot10^{22}$ y) and $^{82}$Se ($T_{1/2} > 1.5\cdot10^{22}$ y) have been obtained. Corresponding bounds on the Majoron-neutrino coupling constant are $\langle g_{ee} \rangle < (0.4-1.9) \cdot 10^{-4}$ and $< (0.66-1.7) \cdot 10^{-4}$.

Keyword(s): Majoron ; Double-beta decay ; Majoron ; double-beta decay

Web-Page: http://pdglive.lbl.gov/REFERENCE_info1.brl?slacrpp=NUPHA,A765,483

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