{"knowledge_schema": {"broad_category": "Physics \u2192 Particle Physics \u2192 Decay Processes", "refinement": "This problem involves understanding particle decay and the spatial resolution required to observe decay products in a particle detector.", "specific_scope": "The focus is on determining the minimum spatial resolution needed in a bubble chamber to observe decay products from a particle decay event within a specified proper lifetime.", "goal": "Calculate the minimum distance that the decay products can travel in the given proper lifetime to ensure that at least 30 candidates can be observed."}, "summary": "This problem relates to particle physics, specifically the observation of decay processes in a bubble chamber. It requires calculating the minimum spatial resolution necessary to detect decay products from a particle decay event, given the proper lifetime of the parent particle. The goal is to determine how far the decay products can travel in the specified time frame, which informs the required resolution for observation. The correct answer indicates that a resolution of 2.08*1e-6 m is necessary to observe at least 30 candidates."}