Speaker
Description
The KamLAND Zero-Neutrino Double-Beta Decay Experiment (KamLAND-Zen) located in Kamioka Observatory, Japan, is a radiopure liquid scintillator detector, doped with 745 kg of enriched Xenon gas. With an exposure of about 2.097 ton$\cdot$yr, KamLAND-Zen provides the most stringent limit on the effective Majorana mass to-date which has been obtained by a multivariate spectral fit in the energy range between 0.5 to 4.8 MeV. Data acquisition officially stopped in August 2024 to prepare for its future upgrade KamLAND2-Zen. An overview of the KamLAND-Zen experiment will be given, followed by the recently obtained results including different statistical perspectives. This will be followed by a brief summary of ongoing preparations for KamLAND2-Zen and its aimed target sensitivity.
