A lepton is a type of elementary particle that is part of the standard model of particle physics. They are fundamental particles, meaning they are not made up of smaller components. The most well-known leptons are the electron, the muon, and the tau, each of which has a corresponding neutrino. Leptons have a half-integer spin and are classified as fermions, which means they follow the Pauli exclusion principle. Leptons play a crucial role in the universe, particularly in the processes of radioactive decay and particle interactions. Unlike other particles, such as quarks, leptons do not experience the strong nuclear force. Instead, they interact through the electromagnetic force and the weak nuclear force, making