TY - JOUR
T1 - Sensitivity of JWST to eV-Scale Decaying Axion Dark Matter
AU - Roy, Sandip
AU - Blanco, Carlos
AU - Dessert, Christopher
AU - Prabhu, Anirudh
AU - Temim, Tea
N1 - Publisher Copyright:
© 2025 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"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. Funded by SCOAP3.
PY - 2025/2/21
Y1 - 2025/2/21
N2 - The recently launched James Webb Space Telescope can resolve eV-scale emission lines arising from dark matter decay. We forecast the end-of-mission sensitivity to the decay of axions, a leading dark matter candidate, in the Milky Way using the blank-sky observations expected during standard operations. Searching for unassociated emission lines will constrain axions in the mass range 0.18 to 2.6 eV with axion-photon couplings gaγγ 5.5×10-12 GeV-1. In particular, these results will constrain nucleophobic QCD axions to masses 0.2 eV.
AB - The recently launched James Webb Space Telescope can resolve eV-scale emission lines arising from dark matter decay. We forecast the end-of-mission sensitivity to the decay of axions, a leading dark matter candidate, in the Milky Way using the blank-sky observations expected during standard operations. Searching for unassociated emission lines will constrain axions in the mass range 0.18 to 2.6 eV with axion-photon couplings gaγγ 5.5×10-12 GeV-1. In particular, these results will constrain nucleophobic QCD axions to masses 0.2 eV.
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U2 - 10.1103/PhysRevLett.134.071003
DO - 10.1103/PhysRevLett.134.071003
M3 - Article
C2 - 40053941
AN - SCOPUS:85218152972
SN - 0031-9007
VL - 134
JO - Physical review letters
JF - Physical review letters
IS - 7
M1 - 071003
ER -