First direct double-β decay Q-value measurement of Se82 in support of understanding the nature of the neutrino

David L. Lincoln, Jason D. Holt, Georg Bollen, Maxime Brodeur, Scott Bustabad, Jonathan Engel, Samuel J. Novario, Matthew Redshaw, Ryan Ringle, Stefan Schwarz

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Abstract

In anticipation of results from current and future double-β decay studies, we report a measurement resulting in a Se82 double-β decay Q value of 2997.9(3) keV, an order of magnitude more precise than the currently accepted value. We also present preliminary results of a calculation of the Se82 neutrinoless double-β decay nuclear matrix element that corrects in part for the small size of the shell model single-particle space. The results of this work are important for designing next generation double-β decay experiments and for the theoretical interpretations of their observations.

Original languageEnglish
Article number012501
JournalPhysical Review Letters
Volume110
Issue number1
DOIs
StatePublished - Jan 2 2013

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