现实缺失的要素：神秘的新粒子类别可能揭示宇宙最深层的秘密

Reality’s missing piece Hints that a strange third type of particle exists are raising hopes that it could explain reality at its deepest level, discovers Miriam Frankel O RDER and chaos. Nature and nurture. Yin and yang. We are fond of carving the world into two. Physics, at first, seems to oblige. Take the universe’s unruly zoo of fundamental particles and it seems to fall into two camps. Boil it all down and you have matter and forces. Together, they make up a pleasingly simple recipe for reality. Except physics has a way of spoiling simple recipes. In recent mathematical work, researchers have discovered a potential third category of particles. …