Gianotti, P. (2024) Investigating the dark sector with the PADME experiment. Il nuovo cimento C, 47 (4). pp. 1-5. ISSN 1826-9885
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Abstract
In the attempt of justifying some unexplained physics phenomena like dark matter nature or the (g − 2)μ anomaly, the existence of new light particles with a wide range of properties has been postulated by several theoretical extensions of the Standard Model. Among the others, a light particle of mass ∼17 MeV (named X17) decaying in e+e− has been put forward to explain an anomaly observed since 2016 in a series of nuclear physics studies performed by the ATOMKI group of Debrecen in Hungary. If confirmed, this new state will represent a real breakthrough in the search of physics phenomena beyond the Standard Model. The PADME experiment at the Laboratori Nazionali di Frascati of INFN, searching for a dark photon and/or other dark sector candidates among the annihilation products of a beam of positrons on the electrons of a fixed target, has the unique opportunity to confirm/disprove the particle nature of such an anomaly. In the second half of 2022, the collaboration performed a data taking campaign centered at √s ∼17 MeV in order to produce on-shell the X17. The collected data are under analysis and this paper presents an overview of the PADME results and perspectives.
| Item Type: | Article |
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| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 22 Oct 2024 10:00 |
| Last Modified: | 22 Oct 2024 10:00 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23226 |
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