{"knowledge_schema": {"broad_category": "Particle Physics \u2192 Decay Processes \u2192 Boson Decays", "refinement": "This problem involves identifying the possible decay channels of a boson based on its mass and interactions with fermions.", "specific_scope": "The focus is on the kinematically allowed decays of the boson X with a mass of 6 GeV, considering the available fermion pairs that can be produced in the decay process.", "goal": "Determine which decay channels are allowed based on the mass of the boson and the masses of the fermions involved."}, "summary": "In this problem, we analyze the decay processes of a boson X with a mass of 6 GeV. The kinematically allowed decays depend on whether the mass of the decay products (fermion pairs) is less than or equal to the mass of the boson. The possible decay channels include pairs of quarks (like cc\u0305, ss\u0305, uu\u0305, dd\u0305) and lepton pairs (like \u03c4^+\u03c4^-, \u03bc^+\u03bc^-, e^+e^-). By considering the masses of the fermions, we can identify which decay channels are allowed. The correct answer will include all pairs that can be produced without exceeding the mass of the boson."}