Amplitude Zeroes in Collinear Processes or What Is Left from a Factorizable 2d Model in Higher Dimensions

Abstract

We show that for collinear processes, i.e. processes where the incoming and outgoing momenta are aligned along the same line, the S-matrix of the tree level 2+1 dimensional Thirring model factorizes: any S - matrix element is a product of $2\to 2$ elements. In particular this means nullification of all collinear $2\to n$ amplitudes for $n>2$.

latex , 8 pp., 2 fig. not included

References in corpus (4)

• Summing tree graphs at threshold
• Summing One-Loop Graphs at Multi-Particle Threshold
• Multiscalar production amplitudes beyond threshold
• 2 \to n threshold production at tree level