- #1
Andrea M.
- 28
- 1
I was wondering if there is a way of calculate the annihilation cross section for two baryons, say ##p\bar p\to\pi\pi## or ##p\bar p\to\gamma\gamma##. The problem here is that we cannot use the usual chiral theory because the energy transfer is of the same order of the cutoff ##\Lambda\sim 1 \text{Gev}##.
In almost all the articles I have found those cross sections are derived by experimental observation, do you know possibles way to derive them theoretically?
In almost all the articles I have found those cross sections are derived by experimental observation, do you know possibles way to derive them theoretically?