A Low Energy Rare Event Search with the Majorana Demonstrator
MAJORANA Collaboration: C. Wiseman, I.J. Arnquist, F.T. Avignone III,, A.S. Barabash, C.J. Barton, F.E. Bertrand, B. Bos, M. Busch, M. Buuck, T.S., Caldwell, Y-D. Chan, C.D. Christofferson, P.-H. Chu, M.L. Clark, C. Cuesta,, J.A. Detwiler, A. Drobizhev, D.W. Edwins
TL;DR
This paper reports on a low-energy rare event search using the Majorana Demonstrator, focusing on dark matter and axions, with improved analysis techniques and results from over 11 kg-years of data.
Contribution
It introduces a novel training set for pulse shape analysis and provides updated results on bosonic dark matter and solar axions.
Findings
Enhanced sensitivity to low-energy rare events.
Updated constraints on bosonic dark matter.
Detection capabilities for solar axions.
Abstract
The MAJORANA DEMONSTRATOR is sensitive to rare events near its energy threshold, including bosonic dark matter, solar axions, and lightly ionizing particles. In this analysis, a novel training set of low energy small-angle Compton scatter events is used to determine the efficiency of pulse shape analysis cuts, and we present updated bosonic dark matter and solar axion results from an 11.17 kg-y dataset using a 5 keV analysis threshold.
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