Griffiths Introduction to Elementary Particles · Problem 4.28

Bound States — David J. Griffiths

Physics — QFT · pi-n-scattering-amplitudes

Problem

(a) Referring to equations (4.47) and (4.48), work out all the

\pi N

scattering amplitudes,

\mathcal{M}_a

through

\mathcal{M}_j

, in terms of

\mathcal{M}_1

and

\mathcal{M}_3

. (b) Generalize equation (4.49) to include all 10 cross sections. (c) In the same way, generalize equation (4.50).