세상에서 가장 고운 입자는 무엇인가?
In particle physics, an elementary particle or fundamental particle is a with no sub structure, thus not composed of other particles. Particles currently thought to be elementary include the fundamental fermions (quarks, leptons, antiquarks, and antileptons), which generally are "matter particles" and "antimatter particles", as well as the fundamental bosons (gauge bosons and the Higgs boson), which generally are "force particles" that mediate interactions among fermions. A particle containing two or more elementary particles is a "composite particle".
fundamental fermions