A Measurement from Feynman diagram

wasi-uz-zaman
Messages
89
Reaction score
1
TL;DR Summary
different calculations from Feynman diagram
hi, can anyone please give me the list of measurement we can do ON Feynman diagram?
Like , branching ratio, cross-section etc
 
Physics news on Phys.org
Those are not measurements you do on Feynman diagrams. Feynman diagrams are not for measuring things, they are graphical representations of terms of a mathematical expression. In order to conclude this from them you need to do the math.
 
Last edited:
  • Like
Likes Vanadium 50 and vanhees71
Thread 'Why is there such a difference between the total cross-section data? (simulation vs. experiment)'
Well, I'm simulating a neutron-proton scattering phase shift. The equation that I solve numerically is the Phase function method and is $$ \frac{d}{dr}[\delta_{i+1}] = \frac{2\mu}{\hbar^2}\frac{V(r)}{k^2}\sin(kr + \delta_i)$$ ##\delta_i## is the phase shift for triplet and singlet state, ##\mu## is the reduced mass for neutron-proton, ##k=\sqrt{2\mu E_{cm}/\hbar^2}## is the wave number and ##V(r)## is the potential of interaction like Yukawa, Wood-Saxon, Square well potential, etc. I first...
Back
Top