Maestrello and Linden 



■^--T-r 



^?^ 



Fig, 8. Contour for (^^ ^ ^ in Eq. (34) 



© 



-^ 











Fig. 9o Deformation of Contour in Fig, 



described earlier but the term T*(K - (k/m)) introduces further 

 poles and branch cuts. The contour and its deformation are shown 

 in the Figs. 8 and 9. In Fig. 9 only the contours for that part of the 

 integrand which is analytic in the upper half-plane are shown. 



4j^(K) may be written 



^AK) =S^(K) +T„(K)e 



-iKa 



where 



Sn,(K) = - 4N, 



iQ-miaK) - xm 



(aK) 



4 



Xm 



and 



500 



