| Saturday 16 August 2025 | |
| Events for day: Tuesday 29 July 2025 |
| 14:00 - 15:00 Weekly Seminar HEPCo Group The X17 Journey: From Nuclear Experiments to Atomic Electron Motion. School PHYSICS Date and time Tuesday, July 29th, 2025 (7 Mordad), 2:00 pm (Tehran zone) Link https://www.skyroom.online/ch/schoolofphysics/highenergyseminar Abstract The ATOMKI collaboration measured excesses in electron-positron production from nuclear transitions of beryllium, helium and carbon nuclei. All these excesses are compatible with the emission of a new boson with mass around 17 MeV, denoted X17. An independent search for this particle, harnessing a particle physics experiment, was performed at the Positron Annihilation into Dark Matter Experiment ... |