Particle physics models for the 17 MeV anomaly in beryllium nuclear decays
Particle physics models for the 17 MeV anomaly in beryllium nuclear decays
The 6.8$\sigma$ anomaly in excited 8Be nuclear decays via internal pair creation is fit well by a new particle interpretation. In a previous analysis, we showed that a 17 MeV protophobic gauge boson provides a particle physics explanation of the anomaly consistent with all existing constraints. Here we begin with …