Systematic Effects in Pulse Shape Analysis of HPGe Detector Signals for Neutrinoless Double-Beta Decay - Nuclear ExperimentReportar como inadecuado




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Abstract: Pulse shape analysis is an important background reduction and signalidentification technique for next generation of neutrinoless double-beta decayexperiments examining 76Ge. We present a study of the systematic uncertaintiesin one such parametric pulse-shape analysis technique for separating multi-sitebackgrounds from single-site signal events. We examined systematicuncertainties for events in full-energy gamma peaks predominantly multi-site,double escape peaks predominantly single-site and the Compton continuum neardouble-beta decay endpoint which will be the dominant background for mostneutrinoless double-beta decay searches. In short, we find total statisticalplus systematic fractional uncertainties in the pulse shape cut survivalprobabilities of: 6.6%, 1.5% and 3.8% for double-escape, continuum andgamma-ray events respectively.



Autor: Victor M Gehman, Steven R Elliott, Dongming Mei

Fuente: https://arxiv.org/



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