We present direct detection constraints on the absorption of hidden-photon dark matter with particle masses in the range 1.2-30 eV$c^{ -2}$ with the DAMIC experiment at SNOLAB. Under the assumption that the local dark matter is entirely constituted of hidden photons, the sensitivity to the kinetic mixing parameter $\kappa$ is competitive with constraints from solar emission, reaching a minimum value of 2.2$\times$$10^{ -14}$ at 17 eV$c^{ -2}$. These results are the most stringent direct detection constraints on hidden-photon dark matter in the galactic halo with masses 3-12 eV$c^{ -2}$ and the first demonstration of direct experimental sensitivity to ionization signals $<$12 eV from dark matter interactions.
Categories: astro-ph.CO hep-ex hep-ph