2022 journal article

Search for Solar Axions via Axion-Photon Coupling with the MAJORANA DEMONSTRATOR


By: I. Arnquist, F. Avignone, A. Barabash, C. Barton, K. Bhimani, E. Blalock*, B. Bos, M. Busch ...

Source: Web Of Science
Added: September 12, 2022

Axions were originally proposed to explain the strong-CP problem in QCD. Through axion-photon coupling, the Sun could be a major source of axions, which could be measured in solid state detection experiments with enhancements due to coherent Primakoff-Bragg scattering. The Majorana Demonstrator experiment has searched for solar axions with a set of Ge76-enriched high purity germanium detectors using a 33 kg-yr exposure collected between January, 2017 and November, 2019. A temporal-energy analysis gives a new limit on the axion-photon coupling as gaγ<1.45×10−9 GeV−1 (95% confidence level) for axions with mass up to 100 eV/c2. This improves laboratory-based limits between about 1 eV/c2 and 100 eV/c2.Received 13 June 2022Accepted 21 July 2022DOI:https://doi.org/10.1103/PhysRevLett.129.081803Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Physical SystemsAxionsSolid-state detectorsParticles & Fields