Recent Results from the Majorana Demonstrator
Abstract
The MAJORANA Collaboration has completed construction and is now operating an array of high purity Ge detectors searching for neutrinoless double-beta decay () in Ge. The array, known as the MAJORANA DEMONSTRATOR, is comprised of 44 kg of Ge detectors (30 kg enriched to 88% in Ge) installed in an ultra-low background compact shield at the Sanford Underground Research Facility in Lead, South Dakota. The primary goal of the DEMONSTRATOR is to establish a low-background design that can be scaled to a next-generation tonne-scale experiment. This work reports initial background levels in the region of interest. Also presented are recent physics results leveraging P-type point-contact detectors with sub-keV energy thresholds to search for physics beyond the Standard Model; first results from searches for bosonic dark matter, solar axions, Pauli exclusion principle violation, and electron decay have been published. Finally, this work discusses the proposed tonne-scale Ge LEGEND experiment.
Cite
@article{arxiv.1804.01582,
title = {Recent Results from the Majorana Demonstrator},
author = {T Gilliss and S I Alvis and I J Arnquist and F T Avignone and A S Barabash and C J Barton and F E Bertrand and T Bode and V Brudanin and M Busch and M Buuck and T S Caldwell and Y-D Chan and C D Christofferson and P -H Chu and C Cuesta and J A Detwiler and C Dunagan and Yu Efremenko and H Ejiri and S R Elliott and G K Giovanetti and M P Green and J Gruszko and I S Guinn and V E Guiseppe and C R Haufe and L Hehn and R Henning and E W Hoppe and M A Howe and K J Keeter and M F Kidd and S I Konovalov and R T Kouzes and A M Lopez and R D Martin and R Massarczyk and S J Meijer and S Mertens and J Myslik and C O'Shaughnessy and G Othman and W Pettus and A W P Poon and D C Radford and J Rager and A L Reine and K Rielage and R G H Robertson and N W Ruof and B Shanks and M Shirchenko and A M Suriano and D Tedeschi and R L Varner and S Vasilyev and K Vetter and K Vorren and B R White and J F Wilkerson and C Wiseman and W Xu and E Yakushev and C -H Yu and V Yumatov and I Zhitnikov and B X Zhu},
journal= {arXiv preprint arXiv:1804.01582},
year = {2018}
}
Comments
6 pages, 1 figure, PANIC 2017: 21st Particles and Nuclei International Conference