The Ghosts We Can’t Find
Copyright: Sanjay Basu Phantom particles, phantom minds, and the narrowing of scientific imagination. What happens when science’s most powerful tools make it harder to see? For twenty years, physicists chased a ghost. The sterile neutrino was a hypothetical particle that interacted with nothing, registered on no detector, and left behind exactly zero evidence of its physical existence. It was, by almost every empirical measure, not there. Physicists loved it anyway. They loved it the way you love a theory that is too elegant to be wrong, too mathematically tidy, too perfectly shaped to fill the exact holes in your understanding. This month, the last experiments that could have saved it reported back with devastating news. The sterile neutrino is dead. But its ghost, and the questions it raises about what we can and can’t find, is very much alive. Because here’s the thing. The sterile neutrino is not the only phantom haunting science right now. At the same moment particle physicis...
