The authors, J. Leite Lopes and N. Fleury, present a model for leptons that addresses the intriguing puzzle of the existence of muons and electrons, which exhibit similar electromagnetic and weak interactions but differ in mass and strong interaction properties. They propose that the lack of strong interactions among leptons is due to a suppression mechanism rather than a fundamental principle. The model introduces a "leptonic neutral quark" or "strongly interacting fundamental heavy lepton," denoted as \( L_0 \), which is strongly bound to a quark-antiquark system to form leptons. This model suggests that leptons are composed of a fundamental object different from known quarks, and it provides a more unified description of leptons and hadrons. The authors discuss two models: Model I, where \( L_0 \) interacts only with kaons to form muons, and Model II, which includes two additional heavy leptons \( L_1 \) and \( L_2 \) that interact with hadrons. These models aim to provide a new approach to understanding the properties and interactions of leptons.The authors, J. Leite Lopes and N. Fleury, present a model for leptons that addresses the intriguing puzzle of the existence of muons and electrons, which exhibit similar electromagnetic and weak interactions but differ in mass and strong interaction properties. They propose that the lack of strong interactions among leptons is due to a suppression mechanism rather than a fundamental principle. The model introduces a "leptonic neutral quark" or "strongly interacting fundamental heavy lepton," denoted as \( L_0 \), which is strongly bound to a quark-antiquark system to form leptons. This model suggests that leptons are composed of a fundamental object different from known quarks, and it provides a more unified description of leptons and hadrons. The authors discuss two models: Model I, where \( L_0 \) interacts only with kaons to form muons, and Model II, which includes two additional heavy leptons \( L_1 \) and \( L_2 \) that interact with hadrons. These models aim to provide a new approach to understanding the properties and interactions of leptons.