Experimental Search for Hidden Photon CDM in the eV mass range with a Dish Antenna

A search for hidden photon cold dark matter (HP CDM) using a new technique with a dish antenna is reported. From the result of the measurement, we found no evidence for the existence of HP CDM and set an upper limit on the photon-HP mixing parameter χ of ~ 6× 10−12 for the hidden photon mass mγ = 3.1 ± 1.2 eV.