Protophobic Fifth-Force Interpretation of the Observed Anomaly in ^{8}Be Nuclear Transitions.

Article, Other literature type, Preprint OPEN
Feng, Jonathan L.; Fornal, Bartosz; Galon, Iftah; Gardner, Susan; Smolinsky, Jordan; Tait, Tim M. P.; Tanedo, Philip;
  • Publisher: eScholarship, University of California
  • Identifiers: doi: 10.1103/physrevlett.117.071803
  • Subject: Nuclear Theory | High Energy Physics - Phenomenology | General Physics | Physical Sciences | hep-ex | High Energy Physics - Experiment | hep-ph | nucl-th | Mathematical Sciences | nucl-ex | Nuclear Experiment | Engineering

Recently a 6.8$\sigma$ anomaly has been reported in the opening angle and invariant mass distributions of $e^+ e^-$ pairs produced in $^8\text{Be}$ nuclear transitions. The data are explained by a 17 MeV vector gauge boson $X$ that is produced in the decay of an excited... View more
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