{"knowledge_schema": {"broad_category": "Physics \u2192 Particle Physics \u2192 Meson Resonances", "refinement": "This problem involves calculating the average distance a meson resonance travels before decaying, using its energy, mass, and decay width.", "specific_scope": "The focus is on the Y meson resonance with specific values for energy, mass, and decay width, applying concepts from relativistic physics and decay processes.", "goal": "Calculate the average distance traveled by the Y meson before it decays, using the provided parameters."}, "summary": "This problem pertains to particle physics, specifically the behavior of meson resonances. It requires calculating the average distance a meson travels before decaying, based on its energy, mass, and decay width. The solution involves applying principles of relativistic physics to determine the lifetime of the meson and subsequently the distance it travels before decaying. The correct answer is 4.0655 \u00d7 10^-15 m."}