Publications in Scientific Journals:
M. Klopf, E. Jericha, B. Märkisch, H. Saul, T. Soldner, H. Abele:
"Constraints on the Dark Matter Interpretation n→χ+e+e− of the Neutron Decay Anomaly with the PERKEO II Experiment";
Physical Review Letters,
122
(2019),
222503;
1
- 4.
English abstract:
Discrepancies from in-beam- and in-bottle-type experiments measuring the neutron lifetime are on the 4σ standard deviation level. In a recent publication Fornal and Grinstein proposed that the puzzle could be solved if the neutron would decay on the one percent level via a dark decay mode, one possible branch being n→χ+e+e−. With data from the Perkeo II experiment we set limits on the branching fraction and exclude a one percent contribution for 95% of the allowed mass range for the dark matter particle.
Keywords:
Dark matter; Electroweak interaction; Neutrons; Nuclear Physics; Particles & Fields; Gravitation, Cosmology & Astrophysics
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1103/PhysRevLett.122.222503
Created from the Publication Database of the Vienna University of Technology.