{"knowledge_schema": {"broad_category": "Particle Physics \u2192 Decay Processes", "refinement": "This problem involves analyzing the decay modes of a boson based on its mass and interactions with fermions.", "specific_scope": "The focus is on the kinematically allowed decay channels for a boson with a mass of 6 GeV, considering the available fermion pairs that can be produced.", "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 are examining the decay processes of a boson X with a mass of 6 GeV. The kinematically allowed decays depend on the mass of the final state particles produced in the decay. The candidates for decay channels include various fermion-antifermion pairs. To determine the allowed decays, we need to ensure that the mass of the final state particles does not exceed the mass of the boson X. The correct answer will include all pairs that can be produced without violating this mass constraint."}