Double beta decay: Present status - INSPIRE

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Double beta decay: Present status

A.S. Barabash
(
- Moscow, ITEP
)

Jul, 2008

33 pages

Part of Particle physics on the eve of LHC. Proceedings, 13th Lomonosov Conference on Elementary Particle Physics, Moscow, Russia, August 23-29, 2007, 141-145

Published in:

Phys.Atom.Nucl. 73 (2010) 162-178

Contribution to:

13th Lomonosov Conference on Elementary Particle Physics, 141-145

e-Print:

0807.2948 [hep-ex]

DOI:

10.1134/S1063778810010187

View in:

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Abstract: (arXiv)

The present status of double beta decay experiments (including the search for

2\beta^{+}

, EC

\beta^{+}

and ECEC processes) are reviewed. The results of the most sensitive experiments are discussed. Average and recommended half-life values for two-neutrino double beta decay are presented. Conservative upper limits on effective Majorana neutrino mass and the coupling constant of the Majoron to the neutrino are established as

<m_{\nu} > < 0.75

eV and

<g_{ee} > < 1.9 \cdot 10^{-4}

, respectively. Proposals for future double beta decay experiments with a sensitivity for the

<m_{\nu}>

at the level of (0.01-0.1) eV are considered.

Note:

33 pages included 7 figures and 14 tables/ an extended version of the invited talk at 13th Lomonosov Conference of Elementary Particle Physics, 23-29 August, 2007, Moscow, Russia

review
double-beta decay: (0neutrino)
double-beta decay: (2neutrino)
lepton number: violation
Majoron: emission
neutrino: mass
nuclide: energy levels
nuclide: lifetime
lower limit
electron: capture

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