jdstokes
Jun4-08, 06:41 AM
I don't understand the first line of equation (5.94) in Peskin and Schroeder (p. 164).
It seems like there is a missing factor of m^2 in the numerator because of the two massive fermion lines?
Edit: I Just realized that Peskin and Schroeder use different expansion coefficients of the Dirac field which don't include a factor of \sqrt{m}.
It seems like there is a missing factor of m^2 in the numerator because of the two massive fermion lines?
Edit: I Just realized that Peskin and Schroeder use different expansion coefficients of the Dirac field which don't include a factor of \sqrt{m}.