Quantum Field Theory and the Standard Model by Schwartz M.D. z-lib.org · Problem 5.2

Cross sections and decay rates — Schwartz M.D. z-lib.org

Physics — QFT · lorentz-invariant-phase-space

Problem

Show that

d\Pi_{\mathrm{LIPS}}

is Lorentz invariant and verify Eq. (5.21).