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Dark Matter Constraints from Isomeric Hf
D. S. M. Alves, S. R. Elliott, R. Massarczyk +2
We describe a first measurement of the radiation from a Hf sample to search for dark matter. The flux from this sample, possessed by Los Alamos National Laboratory…
The Gallium Anomaly
Steven R. Elliott, Vladimir Gavrin, Wick Haxton
In order to test the end-to-end operations of gallium solar neutrino experiments, intense electron-capture sources were fabricated to measure the responses of the radiochemical SAG…
Constraints on the decay of Ta
I. J. Arnquist, F. T. Avignone, A. S. Barabash +56
Ta is a rare nuclear isomer whose decay has never been observed. Its remarkably long lifetime surpasses the half-lives of all other known and electron capture decays d…
Measurement of the Electron-Neutrino Charged-Current Cross Sections on I with the COHERENT NaIE detector
P. An, C. Awe, P. S. Barbeau +86
Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on I with pion decay-at-rest neutrinos produced by the…
Fundamental Symmetries, Neutrons, and Neutrinos (FSNN): Whitepaper for the 2023 NSAC Long Range Plan
B. Acharya, C. Adams, A. A. Aleksandrova +176
This whitepaper presents the research priorities decided on by attendees of the 2022 Town Meeting for Fundamental Symmetries, Neutrons and Neutrinos, which took place December 13-1…
Neutrinoless Double Beta Decay
C. Adams, K. Alfonso, C. Andreoiu +229
This White Paper, prepared for the Fundamental Symmetries, Neutrons, and Neutrinos Town Meeting related to the 2023 Nuclear Physics Long Range Plan, makes the case for double beta…
Modeling Backgrounds for the MAJORANA DEMONSTRATOR
C. R. Haufe, I. J. Arnquist, F. T. Avignone +55
The MAJORANA DEMONSTRATOR is a neutrinoless double-beta decay () experiment containing 30 kg of p-type point contact germanium detectors enriched to 88% in 76Ge and $\s…
Final Result of the MAJORANA DEMONSTRATOR's Search for Neutrinoless Double- Decay in Ge
I. J. Arnquist, F. T. Avignone, A. S. Barabash +57
The MAJORANA DEMONSTRATOR searched for neutrinoless double- decay () of Ge using modular arrays of high-purity Ge detectors operated in vacuum cryostats in a low-ba…
Search for solar axions via axion-photon coupling with the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +55
Axions were originally proposed to explain the strong-CP problem in QCD. Through the axion-photon coupling, the Sun could be a major source of axions, which could be measured in so…
Experimental study of 13C(α,n)16O reactions in the Majorana Demonstrator calibration data
MAJORANA Collaboration, I. J. Arnquist, F. T. Avignone +55
Neutron captures and delayed decays of reaction products are common sources of backgrounds in ultra-rare event searches. In this work, we studied C(O reactions in…
Search for charge nonconservation and Pauli exclusion principle violation with the Majorana Demonstrator
MAJORANA Collaboration, I. J. Arnquist, F. T. Avignone +55
Charge conservation and the Pauli exclusion principle result from fundamental symmetries in the standard model of particle physics, and are typically taken as axiomatic. High-preci…
Search for Spontaneous Radiation from Wavefunction Collapse in the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +51
The Majorana Demonstrator neutrinoless double-beta decay experiment comprises a 44 kg (30 kg enriched in ) array of -type, point-contact germanium detectors. W…
A Search for Electron Neutrino Transitions to Sterile States in the BEST Experiment
V. V. Barinov, B. T. Cleveland, S. N. Danshin +27
The Baksan Experiment on Sterile Transitions (BEST) probes the gallium anomaly and its possible connections to oscillations between active and sterile neutrinos. Based on the Galli…
Signatures of muonic activation in the Majorana Demonstrator
I. J. Arnquist, F. T. Avignone, A. S. Barabash +55
Experiments searching for very rare processes such as neutrinoless double-beta decay require a detailed understanding of all sources of background. Signals from radioactive impurit…
COHERENT Collaboration data release from the first detection of coherent elastic neutrino-nucleus scattering on argon
COHERENT Collaboration, D. Akimov, J. B. Albert +80
Release of COHERENT collaboration data from the first detection of coherent elastic neutrino-nucleus scattering (CEvNS) on argon. This release corresponds with the results of "Anal…
A Search for Neutrinoless Double-Beta Decay in Ge with 26 kg-yr of Exposure from the MAJORANA DEMONSTRATOR
S. I. Alvis, I. J. Arnquist, F. T. Avignone +61
The MAJORANA Collaboration is operating an array of high purity Ge detectors to search for the neutrinoless double-beta decay of Ge. The MAJORANA DEMONSTRATOR consists of 44…
Cosmogenic production of Ar and Ar in argon
R. Saldanha, H. O. Back, R. H. M. Tsang +6
We have experimentally determined the production rate of Ar and Ar from cosmic ray neutron interactions in argon at sea level. Understanding these production rates is…
Ge Detectors and : The Search for Double Beta Decay with Germanium Detectors: Past, Present and Future
Frank T. Avignone, Steven R. Elliott
High Purity Germanium Detectors have excellent energy resolution; the best among the technologies used in double beta decay. Since neutrino-less double beta decay hinges on the sea…
COHERENT Collaboration data release from the first observation of coherent elastic neutrino-nucleus scattering
COHERENT Collaboration, D. Akimov, J. B. Albert +91
This release includes data and information necessary to perform independent analyses of the COHERENT result presented in Akimov et al., arXiv:1708.01294 [nucl-ex]. Data is shared i…
The Majorana Demonstrator Status and Preliminary Results
C. -H. Yu, S. I. Alvis, I. J. Arnquist +63
The Majorana Collaboration is using an array of high-purity Ge detectors to search for neutrinoless double-beta decay in 76Ge. Searches for neutrinoless double-beta decay are under…
Observation of Coherent Elastic Neutrino-Nucleus Scattering
D. Akimov, J. B. Albert, P. An +78
The coherent elastic scattering of neutrinos off nuclei has eluded detection for four decades, even though its predicted cross-section is the largest by far of all low-energy neutr…
Solar Neutrinos as Background to Neutrinoless Double-beta Decay Experiments
S. R. Elliott, H. Ejiri
Solar neutrinos interact within double-beta decay (\BB) detectors and contribute to backgrounds for \BB\ experiments. Background contributions due to charge-current solar neutrino…
Solar neutrino interactions with the double beta decay nuclei of Se, Mo and Nd
H. Ejiri, S. R. Elliott
Solar neutrinos interact within double-beta decay (\BB) detectors and contribute to backgrounds for \BB\ experiments. Background contributions due to solar neutrino interactions wi…
New limits on Bosonic Dark Matter, Solar Axions, Pauli Exclusion Principle Violation, and Electron Decay from the Majorana Demonstrator
N. Abgrall, I. J. Arnquist, F. T. Avignone +64
We present new limits on exotic keV-scale physics based on 478 kg d of MAJORANA DEMONSTRATOR commissioning data. Constraints at the 90% confidence level are derived on bosonic dark…