Collisions of low-energy antiprotons with molecular hydrogen:   ionization, excitation and stopping power
  A time-dependent coupled-channel approach was used to calculate ionization, excitation, and energy-loss cross sections as well as energy spectra for antiproton and proton collisions with molecular hydrogen for impact energies 8 keV < E < 4000 keV. 
Armin L\"uhr and Alejandro Saenz