New result on phase shift analysis
arXiv:2004.11156 · doi:10.1103/PhysRevD.101.094014
Abstract
Assuming a certain continuity property, we prove, using the old results of Itzykson and Martin, that, except for an obvious ambiguity, there are only at most two amplitudes reproducing an elastic differential cross section at a given energy.
10 pages, 1 figure