Checking the Be anomaly with a two-arm electron positron pair spectrometer
arXiv:2401.11676 · doi:10.3390/universe10040168
Abstract
We have repeated the experiment performed recently by Krasznahorkay et al., (Phys. Rev. Lett. 116, 042501 (2016)), which may indicate a new particle called X17 in the literature. In order to get a reliable, and independent result, we used a different type of electron-positron pair spectrometer which have a more simple acceptance/efficiency as a function of the correlation angle, but the other conditions of the experiment were very similar to the published ones. We could confirm the presence of the anomaly measured at the E=18.15 MeV resonance, and also confirm their absence at the E=17.6 MeV resonance, and at E= 800 keV off resonance energies.
Invited talk at the 52nd ISMD, Gyöngyös, Hungary, August 2023