Searching for light dark matter through Positronium decay★
School of Natural Sciences and Technology, Universidad del Turabo,
2 Department of Physics and Astronomy, Purdue University, West Lafayette, IN 47907, USA
a e-mail: firstname.lastname@example.org
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