leptäonen

Leptons are a group of elementary particles in the Standard Model of particle physics. They are fundamental constituents of matter and are not made up of smaller particles. Leptons are characterized by their half-integer spin, classifying them as fermions. There are six known types of leptons, organized into three generations. Each generation consists of a charged lepton and a corresponding neutrino. The first generation includes the electron and its associated electron neutrino. The second generation comprises the muon and its muon neutrino, while the third generation contains the tau and its tau neutrino.

Charged leptons, like the electron, muon, and tau, interact via both the electromagnetic and weak forces. Neutrinos, on the other hand, are electrically neutral and interact only via the weak force and gravity. This makes neutrinos very difficult to detect. Leptons are considered fundamental because they do not appear to be composed of smaller constituents. The properties of leptons, such as their mass and electric charge, are intrinsic. The study of leptons is crucial for understanding the fundamental structure of the universe and the interactions between particles.