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: This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
26
September
2017
Received in final form:
9
November
2017
Published online: 8
March
2018
Abstract
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.
Contribution to the Topical Issue “Low Energy Positron and Electron Interactions”, edited by James Sullivan, Ron White, Michael Bromley, Ilya Fabrikant, and David Cassidy.
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag 2018
