Questions tagged [x17]

Articles, with very little detail, have made their rounds about an X17 boson (16.7 MeV) being observed in tests of decaying beryllium-8 and perhaps once in a test with helium. Most of the undiscovered particles that are searched for in CERN or other…

There is a recent paper in PRL, also on the ArXiv that claims the discovery of a fifth force, mediated by a 17 MeV boson, which explains an anomaly in nuclear decays. Is this a real effect? Could the claimed particle be some sort of composite…

A preprint has been recently published on arXiv about another experimental evidence of the existence of the X17 particle, a 17 MeV boson that would be a potential force carrier. Now, I don't have a strong subnuclear background, but I was able to…