Search for neutrinoless double-beta decay in 136Xe with EXO-200.
Phys Rev Lett
; 109(3): 032505, 2012 Jul 20.
Article
em En
| MEDLINE
| ID: mdl-22861843
ABSTRACT
We report on a search for neutrinoless double-beta decay of 136Xe with EXO-200. No signal is observed for an exposure of 32.5 kg yr, with a background of â¼1.5×10(-3) kg(-1) yr(-1) keV(-1) in the ±1σ region of interest. This sets a lower limit on the half-life of the neutrinoless double-beta decay T(1/2)(0νßß)(136Xe)>1.6×10(25) yr (90% C.L.), corresponding to effective Majorana masses of less than 140-380 meV, depending on the matrix element calculation.
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En
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Phys Rev Lett
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2012
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Article
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