{"knowledge_schema": {"broad_category": "Physics \u2192 Particle Physics \u2192 Baryon Resonances", "refinement": "This problem involves understanding the properties of baryon resonances, specifically their lifetimes and decay widths.", "specific_scope": "The focus is on calculating the mean lifetime of a baryon resonance particle given its mass and decay width in the context of particle physics.", "goal": "Calculate the mean lifetime of the baryon resonance particle Y using the relationship between the decay width and mean lifetime."}, "summary": "This problem pertains to particle physics, specifically the study of baryon resonances. It requires calculating the mean lifetime of a particle based on its decay width, which is a measure of how quickly it decays. The mean lifetime can be determined using the formula \u03c4 = 1/\u0393, where \u0393 is the decay width. Given the decay width of 200 MeV, the mean lifetime of the baryon resonance particle Y can be calculated, leading to the answer of 3.29 \u00d7 10^-24 s."}