{"knowledge_schema": {"broad_category": "Physics \u2192 Particle Physics \u2192 Conservation Laws", "refinement": "This problem involves the conservation of energy and momentum in particle decay processes.", "specific_scope": "The focus is on calculating the maximum energy of one of the photons produced in the decay of particle X into particle Y and two photons.", "goal": "Determine the maximum energy of one photon by applying conservation of energy principles."}, "summary": "This problem is rooted in particle physics, specifically dealing with the decay of a particle and the conservation of energy and momentum. In this scenario, particle X decays into particle Y and two photons, and we need to calculate the maximum energy that one of the photons can have. By applying the conservation of energy, we find that the maximum energy of one photon can be determined by subtracting the mass-energy of particle Y from the mass-energy of particle X, leading to the conclusion that the maximum energy of one photon is 8 MeV."}