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Interesting signal at dark matter detector

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With more data than ever before, a surprising signal has emerged above the expected background in an unexpected place: at low, rather than high, energies. There are three possible explanations that we know of:

  1. it could be an unaccounted-for contaminant, like tritium,
  2. it could be that neutrinos have a surprising property, different than what the Standard Model predicts,
  3. or, most excitingly, it could be our first evidence for a special type of light dark matter, such as an axion-like particle.


Another article here: https://www.quantamagazine.org/dark-matter-experiment-finds-unexplained-signal-20200617/

And a Twitter thread from one of the physicists involved: 


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