Griffiths Introduction to Elementary Particles · Problem 9.16

Weak Interactions — David J. Griffiths

Physics — QFT · qcd-running-coupling-mu-independence

Problem

Prove that the value of

\mu

in equation (9.69) is arbitrary. [That is, suppose physicist

A

uses the value

\mu_a

, and physicist

B

uses a different value,

\mu_b

. Assume

A

's version of equation (9.69) is correct, and prove that

B

's is also correct.]