https://doi.org/10.1140/epjd/e2017-80614-7
Regular Article
Searching for light dark matter through Positronium decay★
1
School of Natural Sciences and Technology, Universidad del Turabo,
Gurabo,
PR
00778, USA
2
Department of Physics and Astronomy, Purdue University,
West Lafayette,
IN
47907, USA
a e-mail: jprios84@gmail.com
Received:
26
September
2017
Received in final form:
9
November
2017
Published online: 8
March
2018
A novel approach to detect light dark matter through the observation of a single photon in the decay of Positronium (Ps) is proposed. Branching ratio calculations indicate that light dark matter coupling to the Standard Model through a novel dark vector boson in the mass range mA′ = 10–500 keV with strength ϵ = 2 × 10−5–10−8 is well above the previously computed Standard Model background decay Ps → γν̄ν and could be sensitive to observation.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2018