2020/06/30 by Andrea Celentano, Luc Darmé, Luca Marsicano +1 · 1 citation
Physics and Astronomy · #hep-ph #hep-ex
paper · pdf · doi:10.1103/physrevd.102.075026
published as Phys. Rev. D 102, 075026 (2020) · 22 pages, 14 figures, datasets available at https://zenodo.org/record/3890984. References added, matches version published in PRD
arxiv created 2020/09/09 · arxiv updated 2020/10/28
Hadronic showers transfer a relevant amount of their energy to electromagnetic subshowers. We show that the generation of "secondary" dark photons in these sub-showers is significant and typically dominates the production at low dark photon masses. The resulting dark photons are however substantially less energetic than the ones originating from mesons decay. We illustrate this point both semi-analytically and through Monte Carlo simulations. Existing limits on vector-mediator scenarios for light dark matter are updated with the inclusion of the new production processes.