Curated by RSF Research Staff
No proton decay observed
For 20 years, physicists in Japan have monitored a 13-story-tall tank of pure water cloistered deep inside an abandoned zinc mine, hoping to see protons in the water spontaneously fall apart. In the meantime, a Nobel Prize has been won for a different discovery in the cathedral-esque water tank pertaining to particles called neutrinos. But the team looking for proton decays — events that would confirm that three of the four forces of nature split off from a single, fundamental force at the beginning of time — is still waiting.