News came out just today that the XENON experiment, an underground lab in Italy looking for dark matter particles, saw a 3.5sigma excess in their data. Physicists right now are on a spectrum ranging from cautiously hyped to pessimistic due to trust issues from one too many disappearing anomalies.
If it is not due to impurities in their detector material which seems to be most people’s best cautious guess, and if the anomaly doesn’t vanish with more data, the best explanation would be axions or sofar unknown properties of neutrinos. However, both options also seem problematic since apparently that these particles with the properties necessary to explain the excess would carry away a lot of energy from stars (where they’re probably produced) than observations allow.
To honour the occasion, my favourite physics blog has awaken from its slumber: Résonaances aka Adam Falkowski is back with its first post in two years!
So, fingers crossed!