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High-Precision $Q$-Value Measurement Confirms the Potential of $^{135}$Cs for Absolute Antineutrino Mass Scale Determination / de Roubin, A. (Jyvaskyla U.) ; Kostensalo, J. (Jyvaskyla U.) ; Eronen, T. (Jyvaskyla U.) ; Canete, L. (Jyvaskyla U. ; U. Surrey (main)) ; de Groote, R.P. (Jyvaskyla U.) ; Jokinen, A. (Jyvaskyla U.) ; Kankainen, A. (Jyvaskyla U.) ; Nesterenko, D.A. (Jyvaskyla U.) ; Moore, I.D. (Jyvaskyla U.) ; Rinta-Antila, S. (Jyvaskyla U.) et al.
The ground-state-to-ground-state $\beta$-decay $Q$-value of $^{135}\textrm{Cs}(7/2^+)\to\,^{135}\textrm{Ba}(3/2^+)$ was directly measured for the first time utilizing the Phase-Imaging Ion-Cyclotron Resonance (PI-ICR) technique at the JYFLTRAP Penning-trap setup. It is the first direct determination of this $Q$-value and its value of 268.66(30)\,keV is a factor of three more precise than the currently adopted $Q$-value in the Atomic Mass Evaluation 2016. [...]
arXiv:2002.08282.- 2020-06-06 - 5 p. - Published in : Phys. Rev. Lett. 124 (2020) 222503 Fulltext: PDF;

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