Griffiths Introduction to Elementary Particles · Problem 3.19
Symmetries — David J. Griffiths
Physics — QFT · three-body-decay-kinematics
Problem
Particle A, at rest, decays into three or more particles: A→B+C+D+⋯.
(a) Determine the maximum and minimum energies that B can have in such a decay, in terms of the various masses.
(b) Find the maximum and minimum electron energies in muon decay, μ−→e−+νˉe+νμ.