@article{d8e8b0567aa84a9a8504d1427eb3a36e,
title = "Search for Low-Mass Axion Dark Matter with ABRACADABRA-10 cm",
abstract = "Two of the most pressing questions in physics are the microscopic nature of the dark matter that comprises 84% of the mass in the Universe and the absence of a neutron electric dipole moment. These questions would be resolved by the existence of a hypothetical particle known as the quantum chromodynamics (QCD) axion. In this work, we probe the hypothesis that axions constitute dark matter, using the ABRACADABRA-10 cm experiment in a broadband configuration, with world-leading sensitivity. We find no significant evidence for axions, and we present 95% upper limits on the axion-photon coupling down to the world-leading level gaγγ<3.2×10-11 GeV-1, representing one of the most sensitive searches for axions in the 0.41-8.27 neV mass range. Our work paves a direct path for future experiments capable of confirming or excluding the hypothesis that dark matter is a QCD axion in the mass range motivated by string theory and grand unified theories.",
author = "Salemi, {Chiara P.} and Foster, {Joshua W.} and Ouellet, {Jonathan L.} and Andrew Gavin and Pappas, {Kaliro{\"e} M.W.} and Sabrina Cheng and Richardson, {Kate A.} and Reyco Henning and Yonatan Kahn and Rachel Nguyen and Rodd, {Nicholas L.} and Safdi, {Benjamin R.} and Lindley Winslow",
note = "Funding Information: We thank Kent Irwin and our DMRadio colleagues for useful discussions and look forward to the next-generation experiment. We thank those that took part in run 1 of ABRACADABRA-10 cm including Zachary Bogorad, Janet Conrad, Joseph Formaggio, Joe Minervini, Alexey Radovinsky, Jesse Thaler, and Daniel Winklehner. We thank Christopher Dessert for useful analysis discussion. This research was supported by the National Science Foundation under Grants No. NSF-PHY-1658693 and No. NSF-PHY-1806440 with additional engineering support from DOE Grant No. DE-SC0018229. J. W. F. and B. R. S. were supported in part by the DOE Early Career Grant No. DESC0019225, through computational resources and services provided by Advanced Research Computing at the University of Michigan, Ann Arbor, and by computational resources at the Lawrencium computational cluster provided by the IT Division at the Lawrence Berkeley National Laboratory, supported by the Director, Office of Science, and Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. Y. K. is supported in part by U.S. Department of Energy Grant No. DE-SC0015655. R. N. is supported by the National Science Foundation Graduate Fellowship under Grant No. DGE–1746047. N. L. R. is supported by the Miller Institute for Basic Research in Science at the University of California, Berkeley. C. P. S. is supported in part by the National Science Foundation Graduate Research Fellowship under Grant No. 1122374. R. H. and K. A. R. are supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics under Grants No. DEFG02-97ER41041 and No. DEFG02-97ER41033. We thank the University of North Carolina at Chapel Hill and the Research Computing group for providing computational resources and support that have contributed to these research results. Publisher Copyright: {\textcopyright} 2021 authors. Published by the American Physical Society.",
year = "2021",
month = aug,
day = "20",
doi = "10.1103/PhysRevLett.127.081801",
language = "English (US)",
volume = "127",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "8",
}