Cargando…
$X_{17}$ anomaly and prospects for its verification with NA64 experiment
The ATOMKI collaboration reported a 7$\sigma$ excess in the angular distribution of $e^{+}e^{-}$ events in the nuclear de-excitation of $^8$Be, which was recently confirmed by new results on other nuclei, $^4$He. This anomaly could be explained by the existence of a new boson $X_{17}$ with a mass ar...
| Autor principal: | |
|---|---|
| Lenguaje: | eng |
| Publicado: |
SISSA
2021
|
| Materias: | |
| Acceso en línea: | https://dx.doi.org/10.22323/1.382.0177 http://cds.cern.ch/record/2778388 |