Very backward π^0 and η^0 production by proton projectiles on a deuterium target at intermediate energies - Berthet, P.; Frascaria, R.; Didelez, J.P.; Perdrisat, C.F.; Pignault, G.; Banaigs, J.; Berger, J.; Goldzahl, L.; Fabbri, F.; Plouin, F.; Yonnet, J.; Satta, L.; et al. (Elsevier)
The production of π^0 and η^0 mesons in the reactions pd -〉 π^0τ and pd -〉 η^0τ has been studied at very backward angles for kinetic proton energies T"p ranging from 0.92 to 2.6 GeV. The excitation functions at θ"π = θ"η = 180^o display large structures which might be related to baryonic (Δ and N^*) excitations in the intermediate state.
http://linkinghub.elsevier.com/retrieve/pii/0375-9474(85)90215-5
Keywords: U