Journal
PHYSICAL REVIEW LETTERS
Volume 118, Issue 16, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.118.161801
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Funding
- U.S. Department of Energy (DOE), Office of Science, Office of Nuclear Physics [DE-AC02-05CH11231, DE-AC52-06NA25396, DE-FG02-97ER41041, DE-FG02-97ER41033, DE-FG02-97ER41042, DE-SC0012612, DE-FG02-10ER41715, DE-SC0010254, DE-FG02-97ER41020]
- National Science Foundation [PHY-0919270, PHY-1003940, 0855314, PHY-1202950, MRI 0923142, 1003399]
- Russian Foundation for Basic Research [15-02-02919]
- U.S. Department of Energy through the Los Alamos National Lab (LANL)/Laboratory Directed Research and Development (LDRD) Program
- DOE Office of Science User Facility [DE-AC02-05CH11231, DE-AC05-00OR22725]
- Direct For Mathematical & Physical Scien
- Division Of Physics [1614611, 1307204] Funding Source: National Science Foundation
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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 matter (DM) and solar axion couplings, Pauli exclusion principle violating (PEPV) decay, and electron decay using monoenergetic peak signal limits above our background. Our most stringent DM constraints are set for 11.8 keV mass particles, limiting g(Ae) < 4.5 x 10(-13) for pseudoscalars and (alpha'/alpha) < 9.7 x 10(-28) for vectors. We also report a 14.4 keV solar axion coupling limit of g(AN)(eff) x g(Ae) < 3.8 x 10(-17), a 1/2 beta(2) < 8.5 x 10(-48) limit on the strength of PEPV electron transitions, and a lower limit on the electron lifetime of tau(e) > 1.2 x 10(24) yr for e(-) -> invisible.
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