Abstract
We compare and contrast the implications of gauge invariance for the structure of scattering amplitudes in QED and QCD. We derive the most general analogue for QCD of the famous QED rule that the scattering amplitude must be invariant if the polarization vectors of any number of photons undergo the replacement , where c is an arbitrary constant.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have