Search for production of an invisible dark photon in π0 decays
(2019) Journal of High Energy Physics (Print) — Vol. 05, n° 5, p. 182 (2019)
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- Abstract
- The results of a search for π0 decays to a photon and an invisible massive dark photon at the NA62 experiment at the CERN SPS are reported. From a total of 4.12 × 108 tagged π0 mesons, no signal is observed. Assuming a kinetic-mixing interaction, limits are set on the dark photon coupling to the ordinary photon as a function of the dark photon mass, improving on previous searches in the mass range 60–110 MeV/c2. The present results are interpreted in terms of an upper limit of the branching ratio of the electro-weak decay 𝜋0→𝛾𝜈𝜈⎯⎯⎯, improving the current limit by more than three orders of magnitud
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Cortina Gil, E., Kleimenova, A., Lurkin, N., & et al. (2019). Search for production of an invisible dark photon in π0 decays. Journal of High Energy Physics (Print), 05(5), 182. https://doi.org/10.1007/JHEP05(2019)182 (Original work published 2019)