Speaker
Description
In spite of the variety of attempts to create dark matter at accelerators, up-to-now, none of the conducted experiments has produced any evidence.
This elusiveness of dark-matter has then triggered innovative and open-minded approaches spanning a wide range of energies with high-sensitivity detectors [1].
In this scenario is inserted the Positron Annihilation into Dark Matter Experiment (PADME) ongoing at the Laboratori Nazionali di Frascati of INFN. PADME is searching a Dark Photon signal [2] by studying the missing-mass spectrum of single photon final states resulting from positron annihilation events on the electrons of a fixed target. Actually, the PADME approach allows to look for any new particle produced in e$^+$e$^−$ collisions through a virtual off-shell photon such as long lived Axion-Like-Particles (ALPs), proto-phobic X bosons, Dark Higgs ...
After the detector commissioning and the beam-line optimization, PADME collaboration collected in 2020 about $5\times10^{12}$ positrons on target at 430 MeV. These data are now under study in order to tune all analysis tools.
In the talk, it will be given an overview of the scientific program of the experiment and the performance of the detector will be presented showing Standard Model channels study ($\gamma\gamma$ events, Bremsstrahlung).
References
[1] M. Battaglieri et al., e-Print: 1707.04591 [hep-ph].
[2] M. Raggi and V. Kozhuharov, Adv. High Energy Phys. 509, (2014) 959802.
| Collaboration / Activity | PADME |
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