In the context of particle physics, what do leptons NOT include?

Leptons are a specific category of fundamental particles in particle physics that include electrons, muons, and neutrinos. They are characterized by not participating in strong interactions, which is a key feature that distinguishes them from other particles such as quarks. Quarks, on the other hand, do participate in strong interactions and are the building blocks of protons and neutrons. Therefore, in the context of particle physics, quarks are not classified as leptons. This differentiation is crucial to understanding the classification of particles in the Standard Model of particle physics, where each particle's interaction properties define its category.