Dynamical Evidence For a Fifth Force Explanation of the ATOMKI Nuclear Anomalies

1 Jun 2020Jonathan L. FengTim M. P. TaitChristopher B. Verhaaren

Recent anomalies in $^8$Be and $^4$He nuclear decays can be explained by postulating a fifth force mediated by a new boson $X$. The distributions of both transitions are consistent with the same $X$ mass, 17 MeV, providing kinematic evidence for a single new particle explanation... (read more)

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