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ifos • paper_2 • nuclear_particleifos-2022-subject-07-004

Electron–positron pair production — UPSC IFoS 2022 Physics PYQ

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(i) Show that pion decay, muon decay and pair production conserve lepton numbers L_e and L_\mu. (ii) Which of the following reactions is/are possible? Justify with reason : \bar{\nu}_e + p = n + \mu^+ \bar{\nu}_e + p \rightarrow n + e^+

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