Constraints on millicharged particles from cosmic-ray production

  title={Constraints on millicharged particles from cosmic-ray production},
  author={Ryan Plestid and Volodymyr Takhistov and Yu-Dai Tsai and Torsten Bringmann and Alexander Kusenko and Maxim Pospelov},
  journal={Physical Review D},
We study the production of exotic millicharged particles (MCPs) from cosmic ray-atmosphere collisions which constitutes a permanent MCP production source for all terrestrial experiments Our calculation of the MCP flux can be used to reinterpret existing limits from experiments such as MACRO and Majorana on an ambient flux of ionizing particles. Large-scale underground neutrino detectors are particularly favorable targets for the resulting MCPs. Using available data from the Super-K experiment… 
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