Axions produced in supernovae generate a diffuse gamma-ray signal through conversion in magnetic fields, yielding competitive constraints on the axion-photon coupling from COMPTEL, EGRET, and Fermi-LAT data plus forecasts for future MeV telescopes.
Axion Dark Matter eXperiment around 3.3 {\mu}eV with Dine-Fischler-Srednicki-Zhitnitsky Discovery Ability
3 Pith papers cite this work. Polarity classification is still indexing.
abstract
We report the results of a QCD axion dark matter search with discovery ability for Dine Fischler Srednicki Zhitnitsky (DFSZ) axions using an axion haloscope. Sub-Kelvin noise temperatures are reached with an ultra low-noise Josephson parametric amplifier cooled by a dilution refrigerator. This work excludes (with a 90% confidence level) DFSZ axions with masses between 3.27 to 3.34 $\mu$eV, assuming a standard halo model with a local energy density of 0.45 GeV/cm$^3$ made up 100% of axions.
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citation-polarity summary
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A ferromagnetic levitated magnetometer with double-resonance mode reaches 0.7 fT magnetic resolution at 276 Hz and sets new direct limits on axionlike dark matter photon coupling g_aγ ~10^{-7} GeV^{-1} in the 40-3000 Hz band, improving prior limits by more than four orders of magnitude.
Anomaly-free discrete R-symmetries plus Kim-Nilles regeneration of the mu term force an accidental U(1)_PQ whose spontaneous breaking yields a SUSY DFSZ axion that solves strong CP.
citing papers explorer
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Lights, Camera, Axion: Tracing Axions from Supernovae in the Diffuse $\gamma$-ray Sky
Axions produced in supernovae generate a diffuse gamma-ray signal through conversion in magnetic fields, yielding competitive constraints on the axion-photon coupling from COMPTEL, EGRET, and Fermi-LAT data plus forecasts for future MeV telescopes.
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Ferromagnetic broadband sensing of axionlike dark matter
A ferromagnetic levitated magnetometer with double-resonance mode reaches 0.7 fT magnetic resolution at 276 Hz and sets new direct limits on axionlike dark matter photon coupling g_aγ ~10^{-7} GeV^{-1} in the 40-3000 Hz band, improving prior limits by more than four orders of magnitude.
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Serendipitous supersymmetric solution to the strong CP problem
Anomaly-free discrete R-symmetries plus Kim-Nilles regeneration of the mu term force an accidental U(1)_PQ whose spontaneous breaking yields a SUSY DFSZ axion that solves strong CP.