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Probing ultra-light dark photon from inverse Compton-like scattering
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abstract
Dark photon not only provides a portal linking dark sector particles and ordinary matter but also is a well-motivated dark matter candidate. We propose to detect the dark photon dark matter through the inverse Compton-like scattering process $p+\gamma^\prime \to p+\gamma$. Thanks to the ultra-high energy primary cosmic rays, we find that such a method is able to probe the dark photon mass from $10^{-2}$ eV down to $10^{-19}$ eV with the expected sensitivity of eROSITA $X$-ray telescope, which can extend the current lower limit of dark photon mass from Jupiter's magnetic fields experiment by about three orders of magnitude.
Forward citations
Cited by 4 Pith papers
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Direct Detection of Leptophobic Dark Matter with Electronic Collective Excitations
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Sub-MHz Radio Background from Ultralight Dark Photon Dark Matter
Dark inverse Compton scattering of cosmic-ray electrons and positrons on ultralight dark photon dark matter produces a sub-MHz radio background that, compared with IMP-6, RAE-2, and Parker Solar Probe data, constrains...
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