Student Friendly Introduction to QFT · Problem 12.5

Renormalization: Putting It All Together

Physics — QFT · fermion-loop-coefficient

Problem

From the Table of Fermion Masses on pg. 315, determine

b_n

for a scattering experiment at

.9

GeV. (Answer:

1/(3\pi^2)

.) Determine

b_n

for an experiment at

1.4

GeV. (Hint: This takes no work.) Determine

b_n

for an experiment at 100 GeV. (Answer:

5/(9\pi^2)