- #1
MWBratton
- 11
- 0
Explain "crossing" without invoking QFT?
Hi there
For someone learning particle physics for the first time (Griffiths' intro book, no knowledge of QFT yet): Why can you "cross" a reaction? Is there an intuitive answer or does one truly need understanding of scattering amplitudes, quantum fields and something called "the S-matrix?"
Hi there
For someone learning particle physics for the first time (Griffiths' intro book, no knowledge of QFT yet): Why can you "cross" a reaction? Is there an intuitive answer or does one truly need understanding of scattering amplitudes, quantum fields and something called "the S-matrix?"