Abstract
The PADME experiment, at the Laboratori Nazionali di Frascati (LNF) of INFN, is designed to be sensitive to the production of a low mass gauge boson A ′ of a new U ( 1 ) symmetry holding for dark particles. The DA Φ NE Beam-Test Facility of LNF is providing a high intensity, mono-energetic positron beam impacting on a low Z target to provide e + e − annihilations, where the dark photon can be produced along with an ordinary photon. Simulation studies predict a sensitivity on the interaction strength ( ε 2 parameter) down to 10 −6 , in the mass region 1 MeV/ c 2 < M A ′ < 23.7 MeV/ c 2 , for one year of data taking with a 550 MeV beam. In 2018 the first run will take place, and early data will give the opportunity to compare the detector performance with the design parameters. Right now, an intense activity is taking place to install and commission the PADME experimental apparatus on site.
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