Masses of 130Te, 130Xe and double-beta-decay Q-value of 130Te
Matthew Redshaw, Brianna J. Mount, Edmund G. Myers, Frank T. Avignone, III
TL;DR
This paper reports precise measurements of the atomic masses of 130Te and 130Xe using a Penning trap, leading to an accurate determination of the double-beta-decay Q-value crucial for neutrino-less decay searches.
Contribution
The study provides the most precise atomic mass measurements of 130Te and 130Xe and calculates an accurate double-beta-decay Q-value, improving the data for neutrino physics research.
Findings
Mass of 130Te: 129.906222744(16) u
Mass of 130Xe: 129.903509351(15) u
Double-beta-decay Q-value: 2527.518(13) keV
Abstract
The atomic masses of 130Te and 130Xe have been obtained by measuring cyclotron frequency ratios of pairs of triply-charged ions simultaneously trapped in a Penning trap. The results with one standard deviation uncertainty are M(130Te) = 129.906 222 744(16) u and M(130Xe) = 129.903 509 351(15) u. Allowing for cancellation of systematic errors in the mass difference, the double-beta-decay Q-value, required for searches for the neutrino-less double-beta-decay of 130Te, is determined to be Qbb (130Te) = 2527.518(13) keV.
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