Structure in Forward-Directionπ−−pCharge-Exchange Scattering in the 3 GeV/cRegion

Structure in the Pion-Proton Total Cross Section Between 2.5 and 5.5 BeV/c

“…9 There seems to be qualitative agreement between these data and the value of the expression 5(fe/47r) 2 [a(7r>)-a(7r + />)] as calculated from data presented here. There is, however, some quantitative disagreement on the momenta at which resonances occur.…”

Regge approach to charged pion photoproduction at invariant energies above 2 GeV

“…One could speculate that this deviation of the model result from the data is a signal for an excited baryon with mass around 2.55 GeV. For instance, the N * (2645) resonance was observed in pion-nuclear interactions [158,159] but was not detected in the photoproduction of positive and neutral pions. If the baryon is a member of a U -spin multiplet with U =3/2 it could not be excited in the interaction of photons with protons because the photon is considered to be U =0.…”

Physics Progress Report, November 1, 1964-December 31, 1965

“…Nuclear reactions between incident deuterons and the tritium produce 3.6 MeV alpha particles, which are detected by a solid-state detector placed close to the target. At a deuteron energy of 100 keV, the cross -section for the deuteriumtritium reaction is about 5 barns, which is many orders of magnitude larger than the cross -sections for other nuclear reactions that can occur between othet components of the solar wind and the ' tritium. Also, since the alpha particles from the deuterium -tritium reaction are practically monoenergetic, they are easily distinguished from extraneous events that may be recorded by the solid-state detector.…”