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arXiv · 1904.00440

Multi-site Event Discrimination in Large Liquid Scintillation Detectors

Jack Dunger·Steven D. Biller
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Abstract

Simulation studies have been carried out to explore the ability to discriminate between single-site and multi-site energy depositions in large scale liquid scintillation detectors. A robust approach has been found that is predicted to lead to a significant statistical separation for a large variety of event classes, providing a powerful tool to discriminate against backgrounds and break important degeneracies in signal extraction. This has particularly relevant implications for liquid scintillator searches for neutrinoless double beta decay ($0νββ$) from $^{130}$Te and $^{136}$Xe, where it is possible for a true $0νββ$ signal to be distinguished from most radioactive backgrounds (including those from cosmogenic production) as well as unknown gamma lines from the target isotope.

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Jack Dunger, Steven D. Biller. 2019-07-22. Multi-site Event Discrimination in Large Liquid Scintillation Detectors. https://doi.org/10.1016/j.nima.2019.162420

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