Speaker
Prof.
Viktor Zacek
(University of Montreal)
Description
Rare nuclear transitions are well suited to explore weakly-coupled New Physics and portals into the dark sector at the MeV-scale. In this talk the so-called X-17 Anomaly will be discussed, which is a significant discrepancy reported by the ATOMKI collaboration in the observation of decays of excited 8Be, 4He and 12C nuclei to their ground states via internal e+e- pair creation. The anomaly, which appears in the angular distribution of the e+e- pairs, can be explained by the emission of a neutral boson with a mass of about 17 MeV/c2, decaying into e+e-. The ATOMKI results and their interpretations are discussed, as well as the status of follow-up experiments, among which an ongoing project at the Montreal Van de Graaff accelerator facility.
| Keyword-1 | Rare nucl. transitions |
|---|---|
| Keyword-2 | X17 - New Physics ? |
Author
Prof.
Viktor Zacek
(University of Montreal)
