Speaker
Prof.
Eliahu Friedman
(Racah Institute of Physics, the Hebrew University)
Description
Experimental annihilation cross sections of antineutrons
and antiprotons at very low energies are compared. On a proton
target the cross sections vary smoothly up to 600 MeV/c and the
differences are described fully by Coulomb focusing. Direct data
comparisons for heavier targets are not possible due to lack of
overlap between energies and targets. Interpolations with optical
potentials that fit all the antiproton-nucleus data from atoms
up to 600 MeV/c surprisingly reveal features of Coulomb scattering
in the antineutron annihilation cross sections on nuclei. Additional
measurements with antiprotons are outlined which will enable direct
data-to-data comparisons.
Primary author
Prof.
Eliahu Friedman
(Racah Institute of Physics, the Hebrew University)
