Particle Finds a New Identity

摘要

About 15 years ago, physicists discovered that the neutrino, a subatomic particle, seems to be able to switch from one type, or flavor, to another while in flight. Last year, an international coalition called the Tokai to Kamioka (T2K) collaboration produced new evidence for this strange phenomenon, which may lead to insights about why there is more matter than antimatter in the universe.