Probing ultra-light dark photon from inverse Compton-like scattering. (arXiv:2105.06326v1 [hep-ph])
<a href="http://arxiv.org/find/hep-ph/1/au:+Su_L/0/1/0/all/0/1">Liangliang Su</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Wu_L/0/1/0/all/0/1">Lei Wu</a>, <a href="http://arxiv.org/find/hep-ph/1/au:+Zhu_B/0/1/0/all/0/1">Bin Zhu</a>
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.
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.
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