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A Level Physics Paper 1 November 2020 Updated Question Paper/Real Exam Last document update:   ago

One strong interaction that occurs when two high-energy protons collide is p + p → p + π + + π − + X . Determine the lepton number, strangeness and charge of particle X. [2 marks] lepton number = strangeness = charge = . Identify particle X. [1 mark] 0 1 0 1 0 1 lOMoAR cPSD| 3 *03* . 3 A possible decay of a negative pion is π − → e − + Y What is particle Y? Tick (�) one box. [1 mark] Do not write outside the box ν�e ve π 0 1 0 Question 1 c...