Dark Photon Search with PADME at LNF

Dark Matter elusiveness could be explained by speculating that it lives in a separate sector with respect to the Standard Model and that interacts with it only by means of messengers. The simplest model foresees just one messenger: a, possibly massive, vector boson given by a new U(1) symmetry. This mediator can faintly mix with the photon and, hence, interact with SM charged particles, seeing an effective charge equal to [Formula: see text], with [Formula: see text] SM charge. The PADME experiment, hosted at Laboratori Nazionali di Frascati, is designed to search for such kind of particle, looking for its production in [Formula: see text] annihilations. Exploiting the DA[Formula: see text]NE linac, the collaboration aims to collect [Formula: see text] positrons on target by the end of 2018, reaching a sensitivity of [Formula: see text] for masses up to [Formula: see text][Formula: see text]Mev