content_image/391687.jpg content_image/391688.jpg content_image/391683.jpg content_image/391682.jpg content_image/391686.jpg content_image/391685.jpg content_image/391684.jpg content_image/391681.jpg
Using (5) 

<img src='content_image/391687.jpg'>

The last integral is evaluated using the proce- dure described in the main text and yields 

<img src='content_image/391688.jpg'>

Upon insertion of (9) all terms cancel and A = 0. 

## VII. APPENDIX B - CANCELATION OF DIVERGENT PIECES 

Here we collect the divergent pieces of J$_{1}$ ( p ), J$_{2}$ ( p ), J$_{3}$ ( p ) and J$_{4}$ ( p ). Putting together the re- sults (5), (9) and (20) we have: 

<img src='content_image/391683.jpg'>

So 

<img src='content_image/391682.jpg'>

The other divergent pieces are 

<img src='content_image/391686.jpg'>

<img src='content_image/391685.jpg'>

<img src='content_image/391684.jpg'>

Using these results in J $^{div}$( p ) = J div 1 ( p ) + J div 2 ( p ) − J div 3 ( p ) − J div 4 ( p ) it is easy to see the cancellation of the divergent pieces. 

## VIII. APPENDIX C - FOURIER TRANSFORMS 

The Fourier transform of any power of logarith- mic functions [15] can be obtained through the Fourier transform of power functions. Our results are given in Minkowski space, for which we use [32]: 

<img src='content_image/391681.jpg'>

