{"knowledge_schema": {"broad_category": "Particle Physics \u2192 Decay Processes \u2192 Boson Decays", "refinement": "This problem involves analyzing the decay modes of a boson based on its mass and interaction with fermions.", "specific_scope": "The focus is on the kinematically allowed decay channels for a boson with a mass of 6 GeV, considering the types of fermions it can decay into.", "goal": "Identify the possible decay channels for the boson X at the lowest order based on its mass and interaction with fermions."}, "summary": "In this problem, we analyze the decay processes of a boson X with a mass of 6 GeV. The kinematically allowed decays at the lowest order involve the boson decaying into pairs of fermions. Given the mass of the boson, it can decay into lighter fermion-antifermion pairs such as quarks (e.g., charm, strange, up, down) and charged leptons (e.g., tau, muon, electron). The correct decay channels include X\u2192cc\u0305, ss\u0305, uu\u0305, dd\u0305, \u03c4^+\u03c4^-, \u03bc^+\u03bc^-, e^+e^-."}