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Indirect Searches for Dark Photon-Photon Tridents in Celestial Objects
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abstract
We model and constrain the unique indirect detection signature produced by dark matter particles that annihilate through a $U(1)$ gauge symmetry into dark photons that subsequently decay into three-photon final states. We focus on scenarios where the dark photon is long-lived, and show that $\gamma$-ray probes of celestial objects can set strong constraints on the dark matter/baryon scattering cross section that in many cases surpass the power of current direct detection constraints, and in some cases even peer into the neutrino fog.
Forward citations
Cited by 9 Pith papers
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Dark Photons in the Early Universe: From Thermal Production to Cosmological Constraints
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.
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Complementary Planetary Spectroscopy Probes of Dark Matter
Dark matter annihilation energy deposited in planetary atmospheres and interiors, compared against existing UV airglow and heat flow measurements, yields new sub-GeV scattering constraints and long-lived mediator reach.
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Out of the darkness: probing the inflationary era with dark photon dark matter
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,...
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Can a Dark Inferno Melt Earth's Core?
Dark matter annihilation inside Earth would melt a substantial fraction of the inner core for cross sections previously allowed by surface heat-flow limits.
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Strong Constraints on Dark Photon and Scalar Dark Matter Decay from INTEGRAL and AMS-02 data
Using INTEGRAL x-ray and AMS-02 positron data, the authors set lower limits on dark photon and scalar dark matter decay lifetimes from 10^25 to 10^29 seconds across 1 MeV to 2 TeV masses.
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Heating the dark matter halo with dark radiation from supernovae
Even a few parts per million of supernova energy emitted as dark radiation could transform cuspy dwarf dark matter halos into cored ones, and observed core sizes bound how much energy can go to new particles.
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Can Orbital Decay of Accreting Binary Pulsars Probe Dark Matter?
Dark matter accretion onto binary pulsars is far too weak to affect observed orbital decay, so existing pulsar timing data cannot probe dark matter microphysics.
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Impact of Sub-MeV Dark Matter on the Cooling of Pulsating White Dwarfs
Sub-MeV dark matter scattering, capture, and evaporation remove at most about 1e22 erg/s from the pulsating white dwarf G117-B15A, too little to explain its excess cooling, while Galactic Center white dwarfs could pro...
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Hunting for Dark Photon-Photon Tridents
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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