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X-Ray Constraints on Dark Photon Tridents

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arxiv 2406.19445 v2 pith:B2PZNGNW submitted 2024-06-27 hep-ph astro-ph.HE

classification hep-phastro-ph.HE
keywords darkphotondecayconstraintsphotonstridentx-raybelow
verification ladder T0 review T1 audit T2 compute T3 formal
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Dark photons that are sufficiently light and/or weakly-interacting represent a compelling vision of dark matter. Dark photon decay into three photons, which we call the dark photon trident, can be the dominant channel when the dark photon mass falls below the electron pair threshold and can produce a significant flux of x-rays. We use 16 years of data from INTEGRAL/SPI to constrain sub-MeV dark photon decay, producing new worlds-best constraints on the kinetic mixing parameter for dark photon masses between 61 keV and 1022 keV, and comment on the potential for future x-ray observatories to discover the trident decay process.

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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 Photons from Perturbative Decay of a Misaligned Higgs Field

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Stochastically misaligned dark Higgs decay into dark photons can make all the dark matter for m_A′ ≈ 100 eV–1 GeV and g ≈ 10^-15–10^-10, shrinking to 10 keV–1 MeV with one-loop kinetic mixing.

  2. Dark Photons in the Early Universe: From Thermal Production to Cosmological Constraints

    hep-ph 2025-12 conditional novelty 6.0 of 10

    Dark photon thermal production is computed analytically, yielding a fixed 4πe/27 ≈ 0.14 resonance-to-inverse-decay ratio and new cosmological limits down to ε~10^-12 over 0.1–6 MeV.

  3. Out of the darkness: probing the inflationary era with dark photon dark matter

    hep-ph 2025-07 conditional novelty 6.0 of 10

    A confirmed dark photon dark matter detection at 19.5 micro-electronvolts would, via the inflationary production formula, predict tensor modes just below current limits and within reach of next-generation experiments,...

  4. Neutrino lines and photon continua from cascade dark matter decay

    hep-ph 2026-07 conditional novelty 5.0 of 10

    In cascade dark-matter decay, neutrino-line searches can beat gamma-ray limits whenever the intermediate mediator is long-lived enough to suppress the photon flux.

  5. Hunting for Dark Photon-Photon Tridents

    hep-ph 2025-06 conditional novelty 4.0 of 10

    Dark photon trident decay (A' to 3 gamma) is used with 16 years of INTEGRAL/SPI x-ray data to set 95% CL limits on kinetic mixing for masses of 61-1022 keV, improving earlier constraints by up to two orders of magnitude.

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