The Search for Neutrinoless Double-Beta Decay with KamLAND-Zen 800
ORAL · Invited
Abstract
The KamLAND-Zen experiment has recently provided stringent constraints on the neutrinoless double-beta decay half-life in 136Xe using a xenon-loaded liquid scintillator. I will present the analysis of a data set with an unprecedented exposure of 970 kg yr of 136Xe. This new data provides valuable insight into backgrounds, especially from cosmic muon spallation of xenon, and has required the use of novel background rejection techniques including machine learning.
*The KamLAND-Zen experiment is supported by JSPS KAKENHI Grant Numbers 21000001, 26104002, and 19H05803; the U.S. National Science Foundation award numbers 2110720 and 2012964; the Heising-Simons Foundation; the Dutch Research Council (NWO); and under the U.S. Department of Energy (DOE) Grant No. DEAC02-05CH11231, as well as other DOE and NSF grants to individual institutions. The Kamioka Mining and Smelting Company has provided service for activities in the mine. We acknowledge the support of NII for SINET4.
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Publication: https://arxiv.org/pdf/2203.02139.pdf
Presenters
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Lindley A Winslow
- Massachusetts Institute of Technology MI