Ratio of the real and imaginary parts of the
![\bar{p}p](/img/latex/91/91cf9b61e97ccedec438482ea167cf58-v2.png)
scattering amplitude near the
![\bar{n}n](/img/latex/70/70bd49079bba4ad7c4228863db89dd0b-v2.png)
threshold
Dal'karov O. D., Protasov K. V.
The appearance of a maximum in the observed momentum dependence of the ratio of the real and imaginary parts of the amplitude for forward pp scattering in the range 0-200 MeV/c of the momentum of the incident antiproton is explained. It results from the opening of the Tin channel and the rapid growth of, and the relatively large magnitude of, the P-wave component of low-energy AW scattering.