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Constraining MeV-scale axion-like particles with Fermi-LAT observations of SN 2023ixf
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abstract
The Fermi-LAT observations of SN 2023ixf, a Type II supernova in the nearby Pinwheel Galaxy, Messier 101 (M101), presents us with an excellent opportunity to constrain MeV-scale Axion-Like Particles (ALPs). By examining the photon decay signature from heavy ALPs that could be produced in the explosion, the existing constraints on the ALP-photon coupling can be improved, under optimistic assumptions, by up to a factor of $ \sim 2 $ for masses $ m_a \lesssim 3 $ MeV. Under very conservative assumptions, we find a bound that is slightly weaker than the existing ones for $ m_a \lesssim 0.5$ MeV. The exact reach of these searches depends mostly on properties of the SN progenitor. This study demonstrates the relevance of core-collapse supernovae, also beyond the Magellanic Clouds, as probes of fundamental physics.
Forward citations
Cited by 2 Pith papers
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Loop-Level Lepton Flavor Violation and Diphoton Signals in the Minimal Left-Right Symmetric Model
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SN 2023ixf: The Closest Supernova of the Decade
SN 2023ixf is a type II supernova that exploded inside dense, confined circumstellar material lost by its red supergiant progenitor in the final years before explosion, as established by synthesizing over 80 published...
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