"Dark photon" theory would completely upend quantum physics - Earth.com
https://www.earth.com/news/dark-photon-theory-casts-doubt-on-double-slit-experiment-quantum-light-interference-pattern/The universe is slightly hotter than it should be. 'Dark photons' could be to blame. | Live Science
https://www.livescience.com/dark-matter-dark-photons