Abstract
The PADME experiment, hosted at Laboratori Nazionali di Frascati in Italy, is going to start its data taking in September 2018. It is designed to search for the Dark Photon (indicated by the symbol A′), an hypothetical particle that can explain the Dark Matter elusiveness, possibly produced in the reaction e+ e− → A′ γ. Together with the target, the segmented electromagnetic calorimeter is the most important component of the experiment, since it is needed to detect the recoil photon energy and position, in such a way to measure the A′ mass. It will consist of 616 2.1 × 2.1 × 23.0 cm3 BGO crystals arranged in a cylindrical shape and read by HZC photomultipliers with a diameter of 1.9 cm. Here we present the results obtained during the measurements performed on the scintillating units with a radioactive source and test beams, together with an overall description of the entire experiment.
Highlights
Many decades of experimental observations suggest that the 27% of the Universe density components are made of a non-baryonic and non-luminous form of matter, that, for this reason, is called Dark Matter (DM) [1]
Standard Model (SM) particles are neutral under this symmetry, while the Dark Photon (DP) could interact with them thanks to a faint mixing with the ordinary photon
PADME is an experiment designed to search for a dark photon possibly produced in the reaction e+ e− → A γ, exploiting the 550 MeV positron beam present at the Laboratori Nazionali di Frascati, close to Rome (IT)
Summary
Many decades of experimental observations suggest that the 27% of the Universe density components are made of a non-baryonic and non-luminous form of matter, that, for this reason, is called Dark Matter (DM) [1]. SM particles are neutral under this symmetry, while the DP could interact with them thanks to a faint mixing with the ordinary photon This will result in an effective charge εe, where e is the electric charge of the SM particle and ε is the A coupling constant. Ohridski” and INFN Laboratori Nazionali di Frascati). Vacuum vessel high energy positron veto electron veto spectrometer active target
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
