Göttingen 2025 – wissenschaftliches Programm
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T: Fachverband Teilchenphysik
T 50: Detectors V (Misc.)
T 50.1: Vortrag
Mittwoch, 2. April 2025, 16:15–16:30, VG 1.102
Progress and Results of the AMoRE: Exploring Neutrinoless Double-Beta Decay with Molybdate Scintillators — •Cagla Mahanoglu, Christian Enss, Andreas Fleischmann, Daniel Hengstler, Ashish Jadhav, Ioana-Alexandra Nitu, Christian Ritter, Andreas Reifenberger, Daniel Unger, and Loredana Gastaldo — Kirchhoff Institute for Physics, Heidelberg University
The Advanced Molybdenum-based Rare process Experiment (AMoRE) aims to search for neutrinoless double-beta (0νββ) decay of the 100Mo isotope using molybdate scintillating crystals. This rare nuclear process, if observed, would confirm the Majorana nature of neutrinos, provide insight into the absolute neutrino mass scale, and reveal new physics beyond the Standard Model. The experiment makes use of metallic magnetic calorimeter (MMC) sensors to achieve high energy resolution and efficient particle discrimination. AMoRE operates in three phases: AMoRE-Pilot (1.887 kg detector, 0.886 kg of 100Mo), AMoRE-I (6 kg array of 100Mo-enriched crystals), and AMoRE-II (large-scale 200 kg array at the Yemilab underground facility). Results from AMoRE-Pilot set a limit on the half-life of T1/2 > 9.5 × 1022 years. In AMoRE-I, a new lower limit of T1/2 > 3.0 × 1024 years (at the 90 percent confidence level) was achieved. The aim of AMoRE-II is to reach a sensitivity of T1/2 > 6 × 1026 years, which would cover the entire inverted Majorana neutrino mass hierarchy range of (15-46) meV. This talk will highlight the current status of the AMoRE, innovative advancements in detector design and optimization of analysis techniques.
Keywords: neutrinoless double-beta decay; majorana neutrinos; metallic magnetic calorimeter (MMC); molybdate scintilators; AMoRE