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Axion signatures from supernova explosions through the nucleon electric-dipole portal

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arxiv 2203.15812 v2 pith:QFGR2R2L submitted 2022-03-29 hep-ph astro-ph.HE

classification hep-phastro-ph.HE
keywords axionsnucleonaxionsignalcouplingelectric-dipolefurthermorefuture
verification ladder T0 review T1 audit T2 compute T3 formal
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We consider axions coupled to nucleons and photons only through the nucleon electric-dipole moment (EDM) portal. This coupling is a model-independent feature of QCD axions, which solve the strong CP problem, and might arise as well in more general axion-like particle setups. We revise the supernova (SN) axion emission induced by the nucleon EDM coupling and refine accordingly the SN 1987A bound. Furthermore, we calculate the axion flux from a future Galactic SN and show that it might produce a peculiar and potentially detectable gamma-ray signal in a large underground neutrino detector such as the proposed Hyper-Kamiokande. The possibility to detect such a signal offers a way to search for an oscillating nucleon EDM complementary to CASPERe, without relying on the assumption that axions are a sizeable component of the dark matter. Furthermore, if axions from SN produce an observable signal, they could also lead to an amount of cosmological extra-radiation observable in future cosmic surveys.

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Cited by 5 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dark Matter Haloscope with a Disordered Dielectric Absorber

    hep-ph 2025-05 conditional novelty 7.0 of 10

    A disordered dielectric powder can act as a broadband dark-matter-to-photon conversion target, and the proposed DPHaSE experiment could probe QCD axions and dark photons in the 10 meV to 1 eV range.

  2. MeV Electrophilic Axion-like Particles from Sun

    hep-ph 2026-07 conditional novelty 6.0 of 10

    MeV axion-like particles could be made when 5.5 MeV solar fusion photons Compton-scatter off electrons; current LZ, PandaX-4T and Borexino data would then constrain g_ae to (1.7-3.7)e-6 in the 0.4-1 MeV window.

  3. Disentangling axion-like particle couplings to nucleons via a delayed signal in Super-Kamiokande from a future supernova

    hep-ph 2024-12 conditional novelty 6.0 of 10

    A future nearby supernova could reveal sub-MeV axion-like particles through a delayed ~30 MeV photon signal in Super-Kamiokande and Hyper-Kamiokande, probing couplings down to about 3 x 10^-6.

  4. Direct detection of solar chameleons with electron recoil data from XENONnT

    hep-ph 2025-11 conditional novelty 5.0 of 10

    XENONnT electron-recoil data bound solar chameleons to log10 β_eff < −6.9, independent of the potential index n for inverse power-law chameleons at the dark-energy scale.

  5. Axions at the meV Crossroads: Theory, Cosmology, Astrophysics, and Experiments

    hep-ph 2026-03 conditional novelty 2.0 of 10

    The meV axion window is presented as a coherent, cross-validated search program in which string theory, stellar cooling, dark matter, and new detector concepts converge on the same mass range.

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