Erlangen 2026 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 34: Fundamental Symmetries I

HK 34.3: Talk

Thursday, March 19, 2026, 14:45–15:00, AM 00.021

High-precision Q-value measurements for neutrino physics using the JYFLTRAP Penning trap — •Jouni Ruotsalainen¹, Elina Kauppinen¹, Anu Kankainen¹, Tommi Eronen¹, Maxime Mougeot¹, Vikas Kumar¹, Jouni Suhonen^1,2, Jenni Kotila^2,3, Zhuang Ge¹, and Marek Stryjczyk¹ — ¹University of Jyväskylä, Department of Physics, Accelerator Laboratory, P.O. Box 35(YFL) FI-40014 University of Jyväskylä, 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