Mainz 2026 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 15: Precision Mass Spectrometry (joint session MS/Q)

Q 15.3: Talk

Monday, March 2, 2026, 17:45–18:00, N 6

High-precision Q-value measurements for neutrino physics using the JYFLTRAP Penning trap — •Jouni Ruotsalainen¹, Elina Kauppinen¹, Maxime Mougeot¹, Tommi Eronen¹, Anu Kankainen¹, Jouni Suhonen^1,2, Vikas Kumar¹, Marek Stryjczyk¹, Marlom Ramalho¹, Zhuang Ge¹, and Jenni Kotila^2,3 — ¹University of Jyvaskyla, Department of Physics, Accelerator Laboratory, P.O. Box 35(YFL) FI-40014 University of Jyvaskyla, Jyväskylä, Finland — ²International Centre for Advanced Training and Research in Physics (CIFRA), P.O. Box MG12, 077125 Bucharest-Măgurele, Romania — ³Finnish Institute for Educational Research, University of Jyväskylä, P.O. Box 35, Jyväskylä FI-40014, Finland

In this contribution, I will present the results and conclusions of the precise Q-value measurements of the ¹¹⁰Ag^m beta decay, and ¹⁰⁴Ru and ¹²²Sn double-beta decays, and the utilized JYFLTRAP double Penning trap system at the University of Jyväskylä, Finland. These nuclides are possible candidates for future experiments studying the mass of the neutrino and whether the neutrino is its own antiparticle. In collaboration with the nuclear theory group at the University of Jyväskylä, the half-lives of the decays were calculated to determine the feasibility of observing these decays. While the ¹¹⁰Ag^m was determined to be a suitable candidate for neutrino mass measurements, the half-lives of ¹⁰⁴Ru and ¹²²Sn neutrinoless double-beta decay were estimated to be too long for the decays to be observed with current experimental sensitivity.

Keywords: Q value; Penning trap; neutrino; beta decay; double-beta decay