Feynman diagram for neutron capture
Physics Asked by Alex.L on January 30, 2021
I am studying experimental methods for detecting neutrons. Having recently studied QFT, I wondered if there was a way to describe this type of process through a Feynman diagram.
For example for the process
$${}_{2}^3{rm He} + n longrightarrow {}_1^3{rm H} + p $$ if it is possible to describe this interaction in terms of quarks.
This question came to me trying to find a formal explanation of the resonances that the cross section presents as shown in the figure:
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