content_image/305107.jpg content_image/305114.jpg content_image/305113.jpg content_image/305112.jpg
loop integrals. Finally, the result for (2.23) is 

<img src='content_image/305107.jpg'>

<img src='content_image/305114.jpg'>

From the definition (2.23) it is clear that this result has the proper mass dimension. Inter- estingly, the result is also valid for any value of n$_{2}$ , including n$_{2}$ = 0. This technique can be extended to integrals containing one massive propagator. For example, consider the integral 

<img src='content_image/305113.jpg'>

This integral occurs in Chapter 4, and also in Ref. [66]. Once again the k$_{2}$ integral can be in- tegrated immediately, and the resulting k$_{1}$ integral can be evaluated using (2.22). Expressing the overall scale dependence in terms of the mass m , the result is 

<img src='content_image/305112.jpg'>

