Elastic scattering, polarization and absorption of relativistic antiprotons on nuclei
arXiv:1609.03343 · doi:10.1016/j.nuclphysa.2016.10.006
Abstract
We perform Glauber model calculations of the antiproton-nucleus elastic and quasielastic scattering and absorption in the beam momentum range GeV/c. A good agreement of our calculations with available LEAR data and with earlier Glauber model studies of the elastic scattering allows us to make predictions at the beam momenta of GeV/c, i.e. at the regime of the PANDA experiment at FAIR. The comparison with the proton-nucleus elastic scattering cross sections shows that the diffractive minima are much deeper in the case due to smaller absolute value of the ratio of the real-to-imaginary part of the elementary elastic amplitude. Significant polarization signal for elastic scattering at 10 GeV/c is expected. We have also revealed a strong dependence of the absorption cross section on the slope parameter of the transverse momentum dependence of the elementary amplitude. The optical potential is discussed.
36 pages, 14 figures, minor revisions, results unchanged, version accepted in Nucl. Phys. A