Cross section and proton antiproton invariant mass distribution of the reaction gammaproton-->proton antiproton proton at 4.7<=Esub(g)ₐsub(m)sub(m)ₐ<=6.6 GeV
Bodenkamp, J.; Fries, D. C.; Markou, A.; Seitz, E.; Behrend, H. J.; Fenner, H.; Hesse, W. P.; Miyachi, T.; Mc Neely, W. A.; Schroeder, V.