English

Investigation of double beta decay with the NEMO-3 detector

Nuclear Experiment 2015-05-18 v1

Abstract

The double beta decay experiment NEMO~3 has been taking data since February 2003. The aim of this experiment is to search for neutrinoless (0νββ0\nu\beta\beta) decay and investigate two neutrino double beta decay in seven different isotopically enriched samples (100^{100}Mo, 82^{82}Se, 48^{48}Ca, 96^{96}Zr, 116^{116}Cd, 130^{130}Te and 150^{150}Nd). After analysis of the data corresponding to 3.75 y, no evidence for 0νββ0\nu\beta\beta decay in the 100^{100}Mo and 82^{82}Se samples was found. The half-life limits at the 90% C.L. are 1.110241.1\cdot 10^{24} y and 3.610233.6\cdot 10^{23} y, respectively. Additionally for 0νββ0\nu\beta\beta decay the following limits at the 90% C.L. were obtained, >1.31022> 1.3 \cdot 10^{22} y for 48^{48}Ca, >9.21021> 9.2 \cdot 10^{21} y for 96^{96}Zr and >1.81022> 1.8 \cdot 10^{22} y for 150^{150}Nd. The 2νββ2\nu\beta\beta decay half-life values were precisely measured for all investigated isotopes.

Keywords

Cite

@article{arxiv.1002.2862,
  title  = {Investigation of double beta decay with the NEMO-3 detector},
  author = {A. S. Barabash and V. B. Brudanin and the NEMO Collaboration},
  journal= {arXiv preprint arXiv:1002.2862},
  year   = {2015}
}

Comments

12 pages, 4 figures, 5 tables; talk at conference on "Fundamental Interactions Physics" (ITEP, Moscow, November 23-27, 2009)