First Direct-Detection Constraints on eV-Scale Hidden-Photon Dark Matter   with DAMIC at SNOLAB
  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. 
A. Aguilar-Arevalo, D. Amidei, X. Bertou, M. Butner, G. Cancelo, A.   Casta\~neda V\'azquez, B.A. Cervantes Vergara, A.E. Ch...
astro-ph.CO hep-ex hep-ph