
%0 Journal Article
%A Cunningham, J 
%T Inelastic Collisions for Small Momentum Transfers
%J Australian Journal of Physics
%D 1964/12/01
%V 17
%N 4
%P 553-555
%K 
%R https://doi.org/10.1071/PH640553
%U https://www.publish.csiro.au/paper/PH640553 
%X Let us denote by Pi> i = 1, 2, ... , 5, the four-momenta of the internal lines of the five-point single-loop graph (p~ = fLi). Each vertex may then be labeled by two suffices and we shall denote the four-momenta of the external particles (measured formally as incoming) by P12 = PI' P23 = P2, ... ,P51 = P5 (P~ = M~). Scalar product variables may be constructed as follows 
