Name: Huan Souza (email_not_shown)
Date: 03/25/20-09:07:00 PM Z

Hi,

I was studying the $phi^4$ theory renormalisation (MS,MSbar) example, kindly made available by you. However, the result for the g counterterm is a bit strange to me ($\delta_g=\frac{3\Delta g}{32\pi^2}). In the other example you made available, $\phi\phi$->$\phi\phi$, the value used was $\delta_g=\frac{3\Delta g^2}{32\pi^2}$ (which is the value showed in Peskin and Schroeder, eq. 12.45). In this way, could you enlighten me about this divergence between the results?

Since now, thank you for your time and patience.

Best regards,

Huan Souza.

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