Double beta decay experiments: beginning of a new era

A. S. Barabash

paper

Double beta decay experiments: beginning of a new era

arXiv:1209.4241

Abstract

The review of current experiments on search and studying of double beta decay processes is done. Results of the most sensitive experiments are discussed and values of modern limits on effective Majorana neutrino mass ( $< m_{ν} >) a r e g i v e n . N e w r es u l t so n tw o n e u t r in o d o u b l e b e t a d ec a y a r e p r ese n t e d . T h es p ec ia l a tt e n t i o ni s g i v e n t o n e w c u r r e n t e x p er im e n t s w i t hma sso f s t u d i e d i so t o p es m or e t han 100 k g, E X O - - 200 an d K am L A N D - - Z e n . T h esee x p er im e n t so p e nan e w er ain r ese a r c h o f d o u b l e b e t a d ec a y . I n t h eseco n d p a r t o f t h er e v i e w p r os p ec t so f se a r c h f or n e u t r in o l ess d o u b l e b e t a d ec a y inn e w e x p er im e n t s w i t h se n s i t i v i t y t o$ <m_ν> $a tt h e l e v e l o f$ \sim 0.01-0.1$ eV are discussed. Parameters and characteristics of the most perspective projects (CUORE, GERDA, MAJORANA, SuperNEMO, EXO, KamLAND--Zen, SNO+) are given.

17 pages, 6 figures; Invited talk at the International Baikal Astroparticle Physics Workshop (APP-2012), July 22 - 27, 2012, Ulan-Ude, Baikal, Russia and the 4th International Conference Current Problems in Nuclear Physics and Atomic Energy, September 3 - 7, 2012, Kyiv, Ukraine

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