Search for neutrinoless double-beta decay in Xe136 with EXO-200

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PhysRevLett.109.032505.pdf (1.31 MB)

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https://doi.org/10.1103/PhysRevLett.109.032505

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2012

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American Physical Society

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https://hdl.handle.net/2022/18706

Abstract

We report on a search for neutrinoless double-beta decay of Xe136 with EXO-200. No signal is observed for an exposure of 32.5 kgyr, with a background of ∼1.5×10−3kg−1yr−1keV−1 in the ±1σ region of interest. This sets a lower limit on the half-life of the neutrinoless double-beta decay T1/20vBB(136Xe)>1.6×1025yr (90% C.L.), corresponding to effective Majorana masses of less than 140-380 meV, depending on the matrix element calculation.

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Lower limits, Majorana, Matrix elements, Region of interest, Atomic physics, Physics, Neutrons

Citation

Auger, M., Auty, D. J., Barbeau, P. S., Beauchamp, E., Belov, V., Benitez-Medina, C., . . . Zeldovich, O. Y. (2012). Search for neutrinoless double-beta decay in Xe136 with EXO-200. Physical Review Letters, 109(3), 032505. http://dx.doi.org/10.1103/PhysRevLett.109.032505

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© 2012 American Physical Society.

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