- #1
Einj
- 470
- 59
Hi everyone. I was trying to reproduce the calculation needed to include the QCD correction to the low energy electroweak Lagrangian. In particular I am looking at Peskin section 18.2. In equation 18.35 an extra minus sign appears on the numerator of the second fermion propagator.
Can anyone explain me why?
Thanks
Can anyone explain me why?
Thanks